video: driver: donot streamoff if streamon fails
From driver if we call streamoff without streamon
successful, the streamoff will be timed out and
it will invoke msm_vidc_inst_timeout, which will
change the core state to ERR and FW unload will
happen unneccessarly.
Change-Id: Iaec6c2de086df53c379d5ec991b22b393d3c9153
Signed-off-by: Ankush Mitra <[email protected]>