net: gmii2rgmii: Switch priv field in mdio device structure

Use the priv field in mdio device structure instead of the one in
phy device structure. The phy device priv field may be used by the
external phy driver and should not be overwritten. Also remove the
check for phy priv field as it is no longer used.

Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

drivers/net/phy/xilinx_gmii2rgmii.c

@@ -38,7 +38,7 @@ struct gmii2rgmii {
 
 static int xgmiitorgmii_read_status(struct phy_device *phydev)
 {
-	struct gmii2rgmii *priv = phydev->priv;
+	struct gmii2rgmii *priv = phydev->mdio.priv;
 	struct mii_bus *bus = priv->mdio->bus;
 	int addr = priv->mdio->addr;
 	u16 val = 0;
@@ -95,17 +95,12 @@ static int xgmiitorgmii_probe(struct mdio_device *mdiodev)
 		return -EPROBE_DEFER;
 	}
 
-	if (priv->phy_dev->priv) {
-		dev_err(dev, "phydev has a priv field, cannot attach\n");
-		return -EFAULT;
-	}
-
 	priv->mdio = mdiodev;
 	priv->phy_drv = priv->phy_dev->drv;
 	memcpy(&priv->conv_phy_drv, priv->phy_dev->drv,
 	       sizeof(struct phy_driver));
 	priv->conv_phy_drv.read_status = xgmiitorgmii_read_status;
-	priv->phy_dev->priv = priv;
+	priv->phy_dev->mdio.priv = priv;
 	priv->phy_dev->drv = &priv->conv_phy_drv;
 
 	return 0;