hwc: Fallback to GPU for video playback usecase

Change-Id: I0496f709f184d0420cd976056f74f26bb1bbdba1
diff --git a/libhwcomposer/hwc.cpp b/libhwcomposer/hwc.cpp
index 8aa6e83..1b1aa86 100644
--- a/libhwcomposer/hwc.cpp
+++ b/libhwcomposer/hwc.cpp
@@ -71,6 +71,7 @@
 
     //Prepare is called after a vsync, so unlock previous buffers here.
     ctx->qbuf->unlockAllPrevious();
+    return 0;
 
     if (LIKELY(list)) {
         getLayerStats(ctx, list);