powerpc/pseries: fix possible memory leak in ibmebus_bus_init()

stable inclusion
from stable-v5.10.197
commit 9f3b2b666833ebef6d0ce5a40e189f38e70342a1
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I96Q8P

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9f3b2b666833ebef6d0ce5a40e189f38e70342a1



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[ Upstream commit afda85b9 ]

If device_register() returns error in ibmebus_bus_init(), name of kobject
which is allocated in dev_set_name() called in device_add() is leaked.

As comment of device_add() says, it should call put_device() to drop
the reference count that was set in device_initialize() when it fails,
so the name can be freed in kobject_cleanup().

Signed-off-by: ruanjinjie <ruanjinjie@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20221110011929.3709774-1-ruanjinjie@huawei.com


Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>