In i40e_flow_flush_fdir_filter, i40e_fdir_teardown is called, so
i40e_fdir_setup is required to be called before create a new fdir flow.
Bugzilla ID: 265
Fixes: 2e67a7fbf3ff ("net/i40e: config flow director automatically")
Cc: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>