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@dpdk.org
Signed-off-by: Ciara Power <ciara.power@intel.com>