nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of()

stable inclusion
from stable-5.10.20
commit 0422b93c4bfb2a4d2cd5402f95591cc323fe577c
bugzilla: 50608

--------------------------------

[ Upstream commit 72e008ce ]

This doesn't call of_node_put() on the error path so it leads to a
memory leak.

Fixes: 0749aa25 ("nvmem: core: fix regression in of_nvmem_cell_get()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210129171430.11328-2-srinivas.kandagatla@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Chen Jun <chenjun102@huawei.com>
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>