powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address

stable inclusion
from stable-v5.10.137
commit 00dc7cbbb558955ff410fd392cc9b0366eb06df0
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=00dc7cbbb558955ff410fd392cc9b0366eb06df0



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[ Upstream commit df5d4b61 ]

of_get_next_parent() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
Add missing of_node_put() in the error path to avoid refcount leak.

Fixes: ce21b3c9 ("[CELL] add support for MSI on Axon-based Cell systems")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220605065129.63906-1-linmq006@gmail.com


Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>