smsc911x: remove superfluous variable init

phydev is assigned a value right away, no need to initialize it.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230329064414.25028-1-wsa+renesas@sang-engineering.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/smsc/smsc911x.c

@@ -1016,7 +1016,7 @@ static void smsc911x_phy_adjust_link(struct net_device *dev)
 static int smsc911x_mii_probe(struct net_device *dev)
 {
 	struct smsc911x_data *pdata = netdev_priv(dev);
-	struct phy_device *phydev = NULL;
+	struct phy_device *phydev;
 	int ret;
 
 	/* find the first phy */