net/i40e: fix flow director input set conflict

net/i40e: fix flow director input set conflict

Currently, there'll be conflict error when running
the following commands:
1. flow create 0 ingress
     pattern eth / ipv4 / udp src is 32 / end
     actions queue index 2 / end
2. flow destroy 0 rule 0
3. flow create 0 ingress
     pattern eth / ipv4 / udp dst is 32 / end
     actions queue index 2 / end

This patch fixes the input set conflict issue.

Fixes: 42044b69c67d ("net/i40e: support input set selection for FDIR")
Fixes: 4a072ad43442 ("net/i40e: fix flow director config after flow validate")
Cc: stable@dpdk.org
Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Tested-by: Lingli Chen <linglix.chen@intel.com>