[PATCH] test/crypto: fix return value in RSA test

[Akhil Goyal]

Cc: stable at dpdk.org

> Subject: [PATCH] test/crypto: fix return value in RSA test
> 
> This patch fixes incorrect return value when RSA negative
> test scenario is validated.
> 
> Coverity-issue: 457463
> Fixes: 9682e8246ae ("test/crypto: add negative case for RSA verification")
> 
> Signed-off-by: Gowrishankar Muthukrishnan <gmuthukrishn at marvell.com>