drivers/net/phy/mdio_bus.c: call put_device on device_register() failure

It is required to call put_device() if device_register() fails, so that we
give up the last reference to the device.  Calling put_device allows for
mdiobus_release to be executed, kfreeing the bus.

Signed-off-by: Levente Kurusa <levex@linux.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: David Daney <david.daney@cavium.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 930694d3a13f7e7568fab6997ccdcd0ecabbb063..71e49000fbf33fc50d08e3c6979014c89fdb4478 100644 (file)
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -150,6 +150,7 @@ int mdiobus_register(struct mii_bus *bus)
        err = device_register(&bus->dev);
        if (err) {
                pr_err("mii_bus %s failed to register\n", bus->id);
+               put_device(&bus->dev);
                return -EINVAL;
        }