net/phy: Fix 88e1111 copper/fiber selection in RGMII mode

MII_M1111_HWCFG_FIBER_COPPER_RES is a bit of MII_M1111_PHY_EXT_SR, not
MII_M1111_PHY_EXT_CR.

Signed-off-by: Wang Jian <[e-mail]>
Signed-off-by: Jeff Garzik <[e-mail]>

drivers/net/phy/marvell.c

···
 {
 	int err;
 	int temp;
-	int mode;
 
 	/* Enable Fiber/Copper auto selection */
 	temp = phy_read(phydev, MII_M1111_PHY_EXT_SR);
···
 
 		temp &= ~(MII_M1111_HWCFG_MODE_MASK);
 
-		mode = phy_read(phydev, MII_M1111_PHY_EXT_CR);
-
-		if (mode & MII_M1111_HWCFG_FIBER_COPPER_RES)
+		if (temp & MII_M1111_HWCFG_FIBER_COPPER_RES)
 			temp |= MII_M1111_HWCFG_MODE_FIBER_RGMII;
 		else
 			temp |= MII_M1111_HWCFG_MODE_COPPER_RGMII;