fs: cifs: Replace _free_xid call in cifs_root_iget function

Modify end of cifs_root_iget function in fs/cifs/inode.c to call
free_xid(xid) instead of _free_xid(xid), thereby allowing debug
notification of this action when enabled.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 8f9a8cc..c98a852 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1066,10 +1066,7 @@ struct inode *cifs_root_iget(struct super_block *sb)
 
 out:
 	kfree(path);
-	/* can not call macro free_xid here since in a void func
-	 * TODO: This is no longer true
-	 */
-	_free_xid(xid);
+	free_xid(xid);
 	return inode;
 }