[netdrvr] phy: Fix bugs in error handling

The recent __must_check stuff flagged some error handling bugs.

phy/fixed.c:
* handle device_bind_driver() failure

phy/phy_device.c:
* handle device_bind_driver() failure
* release rwsem upon failure
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/phy/fixed.c

@@ -289,9 +289,13 @@ static int fixed_mdio_register_device(int number, int speed, int duplex)
 		goto probe_fail;
 	}
 
-	device_bind_driver(&phydev->dev);
+	err = device_bind_driver(&phydev->dev);
+
 	up_write(&phydev->dev.bus->subsys.rwsem);
 
+	if (err)
+		goto probe_fail;
+
 	return 0;
 
 probe_fail:

drivers/net/phy/phy_device.c

@@ -212,11 +212,13 @@ struct phy_device *phy_attach(struct net_device *dev,
 
 		err = d->driver->probe(d);
 
-		if (err < 0)
-			return ERR_PTR(err);
+		if (err >= 0)
+			err = device_bind_driver(d);
 
-		device_bind_driver(d);
 		up_write(&d->bus->subsys.rwsem);
+
+		if (err)
+			return ERR_PTR(err);
 	}
 
 	if (phydev->attached_dev) {