mm-video-v4l2: vdec: Decrement semaphore count in error case.

If flush command is issued from client when component is returning
hardware overload error,flush operation is getting blocked since
codec config semaphore count is not decremented when hardware overload
error happens.

Fix is added to decrement semaphore count for this case.

Change-Id: I54b917329611a1d3181a77ad25a346e4997cc8bb
1 file changed