media: ti: cal: Fix wrong goto on error path

If pm_runtime_resume_and_get() fails, we should unprepare the context,
but currently we skip that as we goto to a later line.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>