nfs: ERR_PTR is expected on failure from nfs_do_clone_mount

Replace NULL with ERR_PTR(-EINVAL).

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 66df08dd1cafbb41cdbb7864128b0920e0c8dbd3..d398775a3af57503aa3ecf6bbaa3db4d0cfd0ba7 100644 (file)
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -189,7 +189,7 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
                                           struct nfs_clone_mount *mountdata)
 {
 #ifdef CONFIG_NFS_V4
-       struct vfsmount *mnt = NULL;
+       struct vfsmount *mnt = ERR_PTR(-EINVAL);
        switch (server->nfs_client->rpc_ops->version) {
                case 2:
                case 3: