usb: core: fix potential memory leak in error path during hcd creation

Free memory allocated for address0_mutex if allocation of bandwidth_mutex
failed.

Fixes: feb26ac3 ("usb: core: hub: hub_port_init lock controller instead of bus")

Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>