net: phy: xgmiitorgmii: Check read_status results

We're ignoring the result of the attached phy device's read_status().
Return it so we can detect errors.
Signed-off-by: NBrandon Maier <brandon.maier@rockwellcollins.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/phy/xilinx_gmii2rgmii.c

@@ -42,8 +42,11 @@ static int xgmiitorgmii_read_status(struct phy_device *phydev)
 	struct mii_bus *bus = priv->mdio->bus;
 	int addr = priv->mdio->addr;
 	u16 val = 0;
+	int err;
 
-	priv->phy_drv->read_status(phydev);
+	err = priv->phy_drv->read_status(phydev);
+	if (err < 0)
+		return err;
 
 	val = mdiobus_read(bus, addr, XILINX_GMII2RGMII_REG);
 	val &= ~XILINX_GMII2RGMII_SPEED_MASK;