libaudiohal@aidl: Fix filterAndUpdateOffloadMetadata return status

When processing keyOffloadCodecChannels parameter, a successful
return was missing.

Bug: 319376495
Test: m
Change-Id: I0c04c72a4d4a1716793f06e9bb6fcb8d3fd8a915
diff --git a/media/libaudiohal/impl/StreamHalAidl.cpp b/media/libaudiohal/impl/StreamHalAidl.cpp
index 378d919..c2d7ee1 100644
--- a/media/libaudiohal/impl/StreamHalAidl.cpp
+++ b/media/libaudiohal/impl/StreamHalAidl.cpp
@@ -808,6 +808,7 @@
                         mOffloadMetadata.channelMask = VALUE_OR_RETURN_STATUS(
                                 ::aidl::android::legacy2aidl_audio_channel_mask_t_AudioChannelLayout(
                                         channel_mask, false /*isInput*/));
+                        return OK;
                     }
                     return BAD_VALUE;
                 }))) {