[ Upstream commit29b74cb75e] Fix to return negative error code -ENOMEM from the smcd_alloc_dev() error handling case instead of 0, as done elsewhere in this function. Fixes:684b89bc39("s390/ism: add device driver for internal shared memory") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>