accel/ivpu: Correct mutex unlock order in job submission

The mutex unlock for vdev->submitted_jobs_lock was incorrectly placed
before unlocking file_priv->lock. Change order of unlocks to avoid potential
race conditions.

Fixes: 5bbccada ("accel/ivpu: Abort all jobs after command queue unregister")
Signed-off-by: Karol Wachowski <karol.wachowski@intel.com>
Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://lore.kernel.org/r/20250425093656.2228168-1-jacek.lawrynowicz@linux.intel.com