crypto: octeontx2 - simplify the return expression of otx2_cpt_aead_cbc_aes_sha_setkey()

commit ae87326cbaeded753661c312b403fd8abba4f130 from
git@git.assembla.com:cavium/WindRiver.linux.git

Simplify the return expression.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Change-Id: If67f47e6d6a5e34b8f6de58723bdc12fa562d6f2
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/90415


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>