first_stage_mount: Skip dm-verity setup if AVB is not enabled

Change-Id: Ia06e94e91cf5fdce14ce37eb85fdd95df1d059bc
diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index 5d3a273..6e0895c 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -441,9 +441,14 @@
             return false;
         }
     }
-    if (!SetUpDmVerity(&(*begin))) {
-        PLOG(ERROR) << "Failed to setup verity for '" << begin->mount_point << "'";
-        return false;
+
+    if (begin->fs_mgr_flags.avb) {
+        if (!SetUpDmVerity(&(*begin))) {
+            PLOG(ERROR) << "Failed to setup verity for '" << begin->mount_point << "'";
+            return false;
+        }
+    } else {
+        LOG(INFO) << "AVB is not enabled, skip verity setup for '" << begin->mount_point << "'";
     }
 
     bool mounted = (fs_mgr_do_mount_one(*begin) == 0);