net: bcm63xx_enet: Fix build failure with phy_ethtool_nway_reset

Introduced a typo making the driver no longer build, *sigh*.

Fixes: 42469bf5 ("net: bcm63xx_enet: Utilize phy_ethtool_nway_reset")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bcm63xx_enet.c

@@ -1435,7 +1435,7 @@ static int bcm_enet_nway_reset(struct net_device *dev)
 
 	priv = netdev_priv(dev);
 	if (priv->has_phy)
-		return phy_ethtool_nway_reset(dev),
+		return phy_ethtool_nway_reset(dev);
 
 	return -EOPNOTSUPP;
 }