NFSv4: Ensure that we return the delegation on the target of a rename too.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/dir.c

@@ -1550,8 +1550,10 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 	}
 	nfs_inode_return_delegation(old_inode);
 
-	if (new_inode)
+	if (new_inode != NULL) {
+		nfs_inode_return_delegation(new_inode);
 		d_delete(new_dentry);
+	}
 
 	nfs_begin_data_update(old_dir);
 	nfs_begin_data_update(new_dir);