[PATCH -next] memory tier: release the new_memtier in find_create_memory_tier()

[Tong Tiangen]

In find_create_memory_tier(),  if failed to register device, then we should
release new_memtier from the tier list and put device instead of memtier.

Fixes: 9832fb87834e ("mm/demotion: expose memory tier details via sysfs")
Signed-off-by: Tong Tiangen <tongtiangen@xxxxxxxxxx>
---
 mm/memory-tiers.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index c734658c6242..e593e56e530b 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -211,8 +211,8 @@ static struct memory_tier *find_create_memory_tier(struct memory_dev_type *memty
 
 	ret = device_register(&new_memtier->dev);
 	if (ret) {
-		list_del(&memtier->list);
-		put_device(&memtier->dev);
+		list_del(&new_memtier->list);
+		put_device(&new_memtier->dev);
 		return ERR_PTR(ret);
 	}
 	memtier = new_memtier;
-- 
2.25.1