net: phy: at803x: Change error to EINVAL for invalid MAC

Change the return error code to EINVAL if the MAC
address is not valid in the set_wol function.
Signed-off-by: NDan Murphy <dmurphy@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/phy/at803x.c

@@ -167,7 +167,7 @@ static int at803x_set_wol(struct phy_device *phydev,
 		mac = (const u8 *) ndev->dev_addr;
 
 		if (!is_valid_ether_addr(mac))
-			return -EFAULT;
+			return -EINVAL;
 
 		for (i = 0; i < 3; i++) {
 			phy_write(phydev, AT803X_MMD_ACCESS_CONTROL,