5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Qiang Liu <liuqiang@kylinos.cn>

[ Upstream commit 7ac657bb9c5c1b0f7bdf1fa6d3ad532f969be5cf ]

Free ndr buffer data when ndr_encode_dos_attr() returns error
to avoid memory leak.

Signed-off-by: Qiang Liu <liuqiang@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/ksmbd/vfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
index 8da562b11b6f6..e643cd1ee87fc 100644
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -1603,14 +1603,15 @@ int ksmbd_vfs_set_dos_attrib_xattr(struct user_namespace *user_ns,
 
 	err = ndr_encode_dos_attr(&n, da);
 	if (err)
-		return err;
+		goto out;
 
 	err = ksmbd_vfs_setxattr(user_ns, path, XATTR_NAME_DOS_ATTRIBUTE,
 				 (void *)n.data, n.offset, 0, get_write);
 	if (err)
 		ksmbd_debug(SMB, "failed to store dos attribute in xattr\n");
-	kfree(n.data);
 
+out:
+	kfree(n.data);
 	return err;
 }
 
-- 
2.53.0