Mutex unlock was missing in CSID driver in case the drv clk rate
call fails. This can result in recursive locking situations.
This commit handles the error scenario.
Change-Id: Ie1e60006713f0a96831ec1174bec1b40ab460a1f
CRs-Fixed: 3712878
Signed-off-by: Gaurav Jindal <[email protected]>