hal: qaf: Handling close output stream

-  Offload session not closing completely
   with QAF enabled and by passing MS12.

- for non-MS12 clips, call for  close output
  stream missed as MS12 qmod contents is NULL.

- Changes to call close output stream for
  non-MS12/non qaf path.

Change-Id: I8040e31f6ae81272f7b1618be9f97212187c430a