net: dsa: fix wrong pointer passed to PTR_ERR() in dsa_port_phylink_create()

Fix wrong pointer passed to PTR_ERR() in dsa_port_phylink_create() to print
error message.

Fixes: cf5ca4dd ("net: dsa: don't leave dangling pointers in dp->pl when failing")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NVladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/dsa/port.c

@@ -1681,7 +1681,7 @@ int dsa_port_phylink_create(struct dsa_port *dp)
 	pl = phylink_create(&dp->pl_config, of_fwnode_handle(dp->dn),
 			    mode, &dsa_port_phylink_mac_ops);
 	if (IS_ERR(pl)) {
-		pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
+		pr_err("error creating PHYLINK: %ld\n", PTR_ERR(pl));
 		return PTR_ERR(pl);
 	}