The intr_handle->intr_vec is allocated by rte_zmalloc(), but freed by
free(), this patch fixes it.
Fixes: 02a7b55657 ("net/hns3: support Rx interrupt")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>