net/ark: fix kvargs memory leak
net/ark: fix kvargs memory leak

Coverity issue: 1428042
Fixes: 1131cbf0fb2b ("net/ark: stub PMD for Atomic Rules Arkville")

Signed-off-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>
Acked-by: John Miller <8c3e694821b089e49385d637347abd0ef3d091ca@atomicrules.com>

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