msm: vidc: Fix qbuf related failures

Recent incomplete fd race condition fix(4190655)
is causing qbuf failures if decode batching
is enabled. Fix is added to make qbuf working in
this case.

Change-Id: I4abfc0619ff4b5c5a25d3e7666f84613a05ff6ee
Signed-off-by: Paras Nagda <quic_pnagda@quicinc.com>
Signed-off-by: Vasantha Balla <quic_vballa@quicinc.com>