Added total_ops value validation in parse_total_ops() function.
Coverity issue: 141070
Fixes: f8be1786b1b8 ("app/crypto-perf: introduce performance test application")
Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>