9p: v9fs_vfs_rename incorrect clunk order

In v9fs_vfs_rename function labels don't match the fids that are clunked.
The correct clunk order is clunking newdirfid first and then olddirfid next.

Signed-off-by: Latchesar Ionkov <[e-mail]>
Signed-off-by: Eric Van Hensbergen <[e-mail]>

fs/9p/vfs_inode.c

···
 	retval = p9_client_wstat(oldfid, &wstat);
 
 clunk_newdir:
-	p9_client_clunk(olddirfid);
+	p9_client_clunk(newdirfid);
 
 clunk_olddir:
-	p9_client_clunk(newdirfid);
+	p9_client_clunk(olddirfid);
 
 done:
 	return retval;