crypto: algif_skcipher - EBUSY on aio should be an error

stable inclusion
from stable-v4.19.153
commit b0112ecef7d8e65b71ee9e30d9635788ddcbb48b
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6FMKH


CVE: NA

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

[ Upstream commit 2a05b029 ]

I removed the MAY_BACKLOG flag on the aio path a while ago but
the error check still incorrectly interpreted EBUSY as success.
This may cause the submitter to wait for a request that will never
complete.

Fixes: dad41997 ("crypto: algif_skcipher - Do not set...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Lu Jialin <lujialin4@huawei.com>
Reviewed-by: Wang Weiyang <wangweiyang2@huawei.com>
Reviewed-by: guozihua <guozihua@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>