[PATCH 4.12 008/106] cgroup: fix error return value from cgroup_subtree_control()

4.12-stable review patch. If anyone has any objections, please let me know. -- From: Tejun Heo commit 3c74541777302eec43a0d1327c4d58b8659a776b upstream. While refactoring, f7b2814bb9b6 ("cgroup: factor out cgroup_{apply|finalize}_control() from

[PATCH 4.12 008/106] cgroup: fix error return value from cgroup_subtree_control()

4.12-stable review patch. If anyone has any objections, please let me know. -- From: Tejun Heo commit 3c74541777302eec43a0d1327c4d58b8659a776b upstream. While refactoring, f7b2814bb9b6 ("cgroup: factor out cgroup_{apply|finalize}_control() from