Merge "av: change return value if effect is not processing" into main am: 38ebe45b am: 48697a2a

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2757226



Change-Id: I3004bdf434e8850bfc40d8d115366228290a27b2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>