[EXT] [PATCH] test/cryptodev: remove unnecessary null check before free

[Akhil Goyal]

> Found by devtools/cocci/nullfree.cocci
> 
> Fixes: 2d970c663314 ("cryptodev: add asymmetric SM2 algorithm")
> Cc: gmuthukrishn at marvell.com
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> ---
Applied to dpdk-next-crypto
Thanks.