[PATCH 4.9 11/69] drm/etnaviv: fix missing unlock on error in etnaviv_gpu_submit()

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Wei Yongjun commit 45abdf35cf82e4270328c7237e7812de960ac560 upstream. Add the missing unlock before return from function etnaviv_gpu_submit() in the error handling

[PATCH 4.9 11/69] drm/etnaviv: fix missing unlock on error in etnaviv_gpu_submit()

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Wei Yongjun commit 45abdf35cf82e4270328c7237e7812de960ac560 upstream. Add the missing unlock before return from function etnaviv_gpu_submit() in the error handling case. lst: fixed label