Fix to return negative error code -ENOMEM from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 472b0444 ("crypto: keembay - Add Keem Bay OCS HCU driver")
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: NDaniele Alessandrelli <daniele.alessandrelli@intel.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>