net: ethernet: altera: fix fixed-link phydev leaks

Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Fixes: 7cdbc6f74f8e ("altera tse: add support for fixed-links.")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/altera/altera_tse_main.c

@@ -819,6 +819,8 @@ static int init_phy(struct net_device *dev)
 
 	if (!phydev) {
 		netdev_err(dev, "Could not find the PHY\n");
+		if (fixed_link)
+			of_phy_deregister_fixed_link(priv->device->of_node);
 		return -ENODEV;
 	}
 
@@ -1545,10 +1547,15 @@ err_free_netdev:
 static int altera_tse_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct altera_tse_private *priv = netdev_priv(ndev);
 
-	if (ndev->phydev)
+	if (ndev->phydev) {
 		phy_disconnect(ndev->phydev);
 
+		if (of_phy_is_fixed_link(priv->device->of_node))
+			of_phy_deregister_fixed_link(priv->device->of_node);
+	}
+
 	platform_set_drvdata(pdev, NULL);
 	altera_tse_mdio_destroy(ndev);
 	unregister_netdev(ndev);