Btrfs: checking for NULL instead of IS_ERR

add_qgroup_rb() never returns NULL, only error pointers.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 229ef8927e6..38b42e7bc91 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1364,8 +1364,10 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
         spin_lock(&fs_info->qgroup_lock);
 
         dstgroup = add_qgroup_rb(fs_info, objectid);
-        if (!dstgroup)
+        if (IS_ERR(dstgroup)) {
+                ret = PTR_ERR(dstgroup);
                 goto unlock;
+        }
 
         if (srcid) {
                 srcgroup = find_qgroup_rb(fs_info, srcid);