When inside the lock, remember to unlock even if you want to leave
early.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: a4e7ccda ("drm/i915: Move context management under GEM")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106144155.25727-1-chris@chris-wilson.co.uk
(cherry picked from commit feba2b81)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>