flow_classify: fix memory leak in rule add
flow_classify: fix memory leak in rule add

Free allocated memory of the rule if not added to the table.

Coverity issue: 257032
Fixes: 50bdac5916d9 ("flow_classify: remove table id parameter from API")

Signed-off-by: Jasvinder Singh <97b766ecf460b59e2781d4fc0469065206870f5c@intel.com>
Reviewed-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>

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