drm/etnaviv: Remove redundant NULL check

Fix the following coccicheck warnings:

./drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c:622:2-8: WARNING: NULL
check before some freeing functions is not needed.

./drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c:618:2-8: WARNING: NULL
check before some freeing functions is not needed.

./drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c:616:2-8: WARNING: NULL
check before some freeing functions is not needed.

Reported-by: Abaci Robot <[email protected]>
Signed-off-by: Jiapeng Chong <[email protected]>
Reviewed-by: Christian Gmeiner <[email protected]>
Signed-off-by: Lucas Stach <[email protected]>

Author: Jiapeng Chong

drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c

@@ -612,14 +612,10 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 err_submit_cmds:
 	if (ret && (out_fence_fd >= 0))
 		put_unused_fd(out_fence_fd);
-	if (stream)
-		kvfree(stream);
-	if (bos)
-		kvfree(bos);
-	if (relocs)
-		kvfree(relocs);
-	if (pmrs)
-		kvfree(pmrs);
+	kvfree(stream);
+	kvfree(bos);
+	kvfree(relocs);
+	kvfree(pmrs);
 
 	return ret;
 }