app/crypto-perf: check lcore job failure
app/crypto-perf: check lcore job failure

Currently, there's no return status check from lcore's jobs.
In case of fail - crypto-perf tool returns success anyway.
This patch adds such a detection and returns proper status at the end.

Fixes: ce8af1a4398d ("app/crypto-perf: wait for cores launched by app")
Cc: stable@dpdk.org

Signed-off-by: Tomasz Jozwiak <e2d2393d20caa1410e98fec57625b71183332ddd@gmail.com>
Acked-by: Akhil Goyal <74d7c4c993a22c1d4f60c46ff3d95c969a24a25c@nxp.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk