[PATCH] net: mdio-mux: bcm-iproc: call mdiobus_free() in error path

[David Miller]

From: Jon Mason <jon.mason at broadcom.com>
Date: Mon,  8 May 2017 17:48:35 -0400

> If an error is encountered in mdio_mux_init(), the error path will call
> mdiobus_free().  Since mdiobus_register() has been called prior to
> mdio_mux_init(), the bus->state will not be MDIOBUS_UNREGISTERED.  This
> causes a BUG_ON() in mdiobus_free().  To correct this issue, add an
> error path for mdio_mux_init() which calls mdiobus_unregister() prior to
> mdiobus_free().
> 
> Signed-off-by: Jon Mason <jon.mason at broadcom.com>
> Fixes: 98bc865a1ec8 ("net: mdio-mux: Add MDIO mux driver for iProc SoCs")

Applied and queued up for -stable.