net: ethernet: ixgbe: don't call devm_mdiobus_free()

The idea behind devres is that the release callbacks are called if
probe fails. As we now check the return value of ixgbe_mii_bus_init(),
we can drop the call devm_mdiobus_free() in error path as the release
callback will be called automatically.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c

@@ -905,7 +905,6 @@ s32 ixgbe_mii_bus_init(struct ixgbe_hw *hw)
 	struct pci_dev *pdev = adapter->pdev;
 	struct device *dev = &adapter->netdev->dev;
 	struct mii_bus *bus;
-	int err = -ENODEV;
 
 	bus = devm_mdiobus_alloc(dev);
 	if (!bus)
@@ -923,7 +922,7 @@ s32 ixgbe_mii_bus_init(struct ixgbe_hw *hw)
 	case IXGBE_DEV_ID_X550EM_A_1G_T:
 	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
 		if (!ixgbe_x550em_a_has_mii(hw))
-			goto ixgbe_no_mii_bus;
+			return -ENODEV;
 		bus->read = &ixgbe_x550em_a_mii_bus_read;
 		bus->write = &ixgbe_x550em_a_mii_bus_write;
 		break;
@@ -948,15 +947,8 @@ s32 ixgbe_mii_bus_init(struct ixgbe_hw *hw)
 	 */
 	hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22;
 
-	err = mdiobus_register(bus);
-	if (!err) {
 	adapter->mii_bus = bus;
-		return 0;
-	}
-
-ixgbe_no_mii_bus:
-	devm_mdiobus_free(dev, bus);
-	return err;
+	return mdiobus_register(bus);
 }
 
 /**