[PATCH] mm/memcontrol: remove redundant NULL check

[Yang Li]

Fix below warnings reported by coccicheck:
./mm/memcontrol.c:451:3-9: WARNING: NULL check before some freeing
functions is not needed.

Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Signed-off-by: Yang Li <abaci-bugfix@xxxxxxxxxxxxxxxxx>
---
 mm/memcontrol.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 605f671..f6a561b 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -447,8 +447,7 @@ static void memcg_free_shrinker_maps(struct mem_cgroup *memcg)
 	for_each_node(nid) {
 		pn = mem_cgroup_nodeinfo(memcg, nid);
 		map = rcu_dereference_protected(pn->shrinker_map, true);
-		if (map)
-			kvfree(map);
+		kvfree(map);
 		rcu_assign_pointer(pn->shrinker_map, NULL);
 	}
 }
-- 
1.8.3.1