ethernet: remove superfluous clearing of phydev

phy_disconnect() calls phy_detach() which already clears 'phydev' if it
is attached to a struct net_device.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230321131745.27688-1-wsa+renesas@sang-engineering.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/engleder/tsnep_main.c

@@ -246,7 +246,6 @@ static void tsnep_phy_close(struct tsnep_adapter *adapter)
 {
 	phy_stop(adapter->netdev->phydev);
 	phy_disconnect(adapter->netdev->phydev);
-	adapter->netdev->phydev = NULL;
 }
 
 static void tsnep_tx_ring_cleanup(struct tsnep_tx *tx)

drivers/net/ethernet/microchip/lan743x_main.c

@@ -1466,7 +1466,6 @@ static void lan743x_phy_close(struct lan743x_adapter *adapter)
 
 	phy_stop(netdev->phydev);
 	phy_disconnect(netdev->phydev);
-	netdev->phydev = NULL;
 }
 
 static void lan743x_phy_interface_select(struct lan743x_adapter *adapter)

drivers/net/ethernet/renesas/rswitch.c

@@ -1324,10 +1324,8 @@ static int rswitch_phy_device_init(struct rswitch_device *rdev)
 
 static void rswitch_phy_device_deinit(struct rswitch_device *rdev)
 {
-	if (rdev->ndev->phydev) {
+	if (rdev->ndev->phydev)
 		phy_disconnect(rdev->ndev->phydev);
-		rdev->ndev->phydev = NULL;
-	}
 }
 
 static int rswitch_serdes_set_params(struct rswitch_device *rdev)

drivers/net/ethernet/smsc/smsc911x.c

@@ -1741,7 +1741,6 @@ static int smsc911x_open(struct net_device *dev)
 	free_irq(dev->irq, dev);
 mii_free_out:
 	phy_disconnect(dev->phydev);
-	dev->phydev = NULL;
 out:
 	pm_runtime_put(dev->dev.parent);
 	return retval;
@@ -1772,7 +1771,6 @@ static int smsc911x_stop(struct net_device *dev)
 	if (dev->phydev) {
 		phy_stop(dev->phydev);
 		phy_disconnect(dev->phydev);
-		dev->phydev = NULL;
 	}
 	netif_carrier_off(dev);
 	pm_runtime_put(dev->dev.parent);

drivers/net/ethernet/sunplus/spl2sw_phy.c

@@ -84,9 +84,7 @@ void spl2sw_phy_remove(struct spl2sw_common *comm)
 	for (i = 0; i < MAX_NETDEV_NUM; i++)
 		if (comm->ndev[i]) {
 			ndev = comm->ndev[i];
-			if (ndev) {
+			if (ndev)
 				phy_disconnect(ndev->phydev);
-				ndev->phydev = NULL;
-			}
 		}
 }