Clean up AudioPolicyManager and tests

Bug: 309080867
Test: atest AudioHostTest
Change-Id: I0d4713401bdc695ac9826b2713e83cd8dcf794d3
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 3bebb11..8d955ff 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -3825,7 +3825,6 @@
 status_t AudioPolicyManager::unregisterPolicyMixes(Vector<AudioMix> mixes)
 {
     ALOGV("unregisterPolicyMixes() num mixes %zu", mixes.size());
-    status_t endResult = NO_ERROR;
     status_t res = NO_ERROR;
     bool checkOutputs = false;
     sp<HwModule> rSubmixModule;
@@ -3838,7 +3837,6 @@
                         AUDIO_HARDWARE_MODULE_ID_REMOTE_SUBMIX);
                 if (rSubmixModule == 0) {
                     res = INVALID_OPERATION;
-                    endResult = INVALID_OPERATION;
                     continue;
                 }
             }
@@ -3847,20 +3845,25 @@
 
             if (mPolicyMixes.unregisterMix(mix) != NO_ERROR) {
                 res = INVALID_OPERATION;
-                endResult = INVALID_OPERATION;
                 continue;
             }
 
-            for (auto device : {AUDIO_DEVICE_IN_REMOTE_SUBMIX, AUDIO_DEVICE_OUT_REMOTE_SUBMIX}) {
+            for (auto device: {AUDIO_DEVICE_IN_REMOTE_SUBMIX, AUDIO_DEVICE_OUT_REMOTE_SUBMIX}) {
                 if (getDeviceConnectionState(device, address.c_str()) ==
-                        AUDIO_POLICY_DEVICE_STATE_AVAILABLE)  {
-                    res = setDeviceConnectionStateInt(device, AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
-                                                      address.c_str(), "remote-submix",
-                                                      AUDIO_FORMAT_DEFAULT);
-                    if (res != OK) {
+                    AUDIO_POLICY_DEVICE_STATE_AVAILABLE) {
+                    status_t currentRes =
+                            setDeviceConnectionStateInt(device,
+                                                        AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
+                                                        address.c_str(),
+                                                        "remote-submix",
+                                                        AUDIO_FORMAT_DEFAULT);
+                    if (!audio_flags::audio_mix_ownership()) {
+                        res = currentRes;
+                    }
+                    if (currentRes != OK) {
                         ALOGE("Error making RemoteSubmix device unavailable for mix "
                               "with type %d, address %s", device, address.c_str());
-                        endResult = INVALID_OPERATION;
+                        res = INVALID_OPERATION;
                     }
                 }
             }
@@ -3870,24 +3873,16 @@
         } else if ((mix.mRouteFlags & MIX_ROUTE_FLAG_RENDER) == MIX_ROUTE_FLAG_RENDER) {
             if (mPolicyMixes.unregisterMix(mix) != NO_ERROR) {
                 res = INVALID_OPERATION;
-                endResult = INVALID_OPERATION;
                 continue;
             } else {
                 checkOutputs = true;
             }
         }
     }
-    if (audio_flags::audio_mix_ownership()) {
-        res = endResult;
-        if (res == NO_ERROR && checkOutputs) {
-            checkForDeviceAndOutputChanges();
-            updateCallAndOutputRouting();
-        }
-    } else {
-        if (res == NO_ERROR && checkOutputs) {
-            checkForDeviceAndOutputChanges();
-            updateCallAndOutputRouting();
-        }
+
+    if (res == NO_ERROR && checkOutputs) {
+        checkForDeviceAndOutputChanges();
+        updateCallAndOutputRouting();
     }
     return res;
 }