net: ixp4xx_eth: Return proper error for eth_init_one

Return PTR_ERR(port->phydev) instead of 1 if phy_connect failed.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NKrzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/arm/ixp4xx_eth.c

@@ -1229,8 +1229,10 @@ static int __devinit eth_init_one(struct platform_device *pdev)
 	snprintf(phy_id, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, "0", plat->phy);
 	port->phydev = phy_connect(dev, phy_id, &ixp4xx_adjust_link, 0,
 				   PHY_INTERFACE_MODE_MII);
-	if ((err = IS_ERR(port->phydev)))
+	if (IS_ERR(port->phydev)) {
+		err = PTR_ERR(port->phydev);
 		goto err_free_mem;
+	}
 
 	port->phydev->irq = PHY_POLL;