msm: camera: Handle incorrect parameter properly

By this change, when incorrect size is passed, we
return back rather than proceeding forward.

CRs-Fixed: 477936

Change-Id: I8f3ea3c7680a468e36ed0cdb026e95cc29e3f4be
Signed-off-by: Aditya Jonnalagadda <ajonnala@codeaurora.org>