drivers: dio: fix possible memory leak in dio_init()

drivers: dio: fix possible memory leak in dio_init()

[ Upstream commit 97fe71f0f1420094fd70ddc7f62d75bea0ee7e3b ]

If device_register() returns error, the 'dev' and name needs be
freed. Add a release function, and then call put_device() in the
error path, so the name is freed in kobject_cleanup() and to the
'dev' is freed in release function.

Fixes: 33dc8269f10b ("m68k: dio - Kill warn_unused_result warnings")
Fixes: 13e0419aca34 ("driver core: get rid of struct device's bus_id string array")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221109064036.1835346-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>