net: ucc_geth: Don't use the MAC as PHY without a fixed link

This matches what the other drivers using fixed-link support do and
restores the behaviour before commit 87009814 ("ucc_geth: use the
new fixed PHY helpers") for the affected device trees (i.e. no
phy-handle and no fixed-link).

Fixes: 87009814 ("ucc_geth: use the new fixed PHY helpers")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/ucc_geth.c

@@ -3785,15 +3785,14 @@ static int ucc_geth_probe(struct platform_device* ofdev)
 	ug_info->uf_info.irq = irq_of_parse_and_map(np, 0);
 
 	ug_info->phy_node = of_parse_phandle(np, "phy-handle", 0);
-	if (!ug_info->phy_node) {
-		/* In the case of a fixed PHY, the DT node associated
+	if (!ug_info->phy_node && of_phy_is_fixed_link(np)) {
+		/*
+		 * In the case of a fixed PHY, the DT node associated
 		 * to the PHY is the Ethernet MAC DT node.
 		 */
-		if (of_phy_is_fixed_link(np)) {
 		err = of_phy_register_fixed_link(np);
 		if (err)
 			return err;
-		}
 		ug_info->phy_node = of_node_get(np);
 	}