drm/panthor: unlock on error in panthor_ioctl_bo_create()
Call drm_dev_exit() before returning -EINVAL.
Fixes: cd2c9c3015e6 ("drm/panthor: Add flag to map GEM object Write-Back Cacheable")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patch.msgid.link/aUOxxvXXtHHfFCcg@stanley.mountain
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
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