rapidio: fix possible name leaks when rio_add_device() fails

rapidio: fix possible name leaks when rio_add_device() fails

[ Upstream commit f9574cd48679926e2a569e1957a5a1bcc8a719ac ]

Patch series "rapidio: fix three possible memory leaks".

This patchset fixes three name leaks in error handling.
 - patch #1 fixes two name leaks while rio_add_device() fails.
 - patch #2 fixes a name leak while  rio_register_mport() fails.

This patch (of 2):

If rio_add_device() returns error, the name allocated by dev_set_name()
need be freed.  It should use put_device() to give up the reference in the
error path, so that the name can be freed in kobject_cleanup(), and the
'rdev' can be freed in rio_release_dev().

Link: https://lkml.kernel.org/r/20221114152636.2939035-1-yangyingliang@huawei.com
Link: https://lkml.kernel.org/r/20221114152636.2939035-2-yangyingliang@huawei.com
Fixes: e8de370188d0 ("rapidio: add mport char device driver")
Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>