[EXT] [PATCH] crypto/ipsec_mb: fix qp cleanup unreachable code

[Akhil Goyal]

> The qp is never NULL when it reaches the qp_setup_cleanup error handling
> code. This is due to checks earlier in the function that return an error
> if qp is NULL.
> 
> Coverity issue: 375013
> Fixes: 581c39b1cb7d ("crypto/ipsec_mb: fix queue cleanup null pointer
> dereference")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Ciara Power <ciara.power at intel.com>
Applied to dpdk-next-crypto