[PATCH] cgroup: cgroup: Remove unnecessary ‘NULL’ values from res

[Li kunyu]

res is assigned first, so it does not need to initialize the assignment.

Signed-off-by: Li kunyu <kunyu@xxxxxxxxxxxx>
---
 kernel/cgroup/cgroup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index cdda2a147d6b..3a8802921bcb 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1419,7 +1419,7 @@ static inline struct cgroup *__cset_cgroup_from_root(struct css_set *cset,
 static struct cgroup *
 current_cgns_cgroup_from_root(struct cgroup_root *root)
 {
-	struct cgroup *res = NULL;
+	struct cgroup *res;
 	struct css_set *cset;
 
 	lockdep_assert_held(&css_set_lock);
-- 
2.18.2