net/i40e: fix not supporting NULL TM profile
net/i40e: fix not supporting NULL TM profile

It's by design that APP can add a TM node without shaper
profile. But i40e doesn't support it currently.

Fixes: 03a249b62bbd ("net/i40e: support adding TM node")
Fixes: cac29c3c00a4 ("net/i40e: support committing TM hierarchy")
Cc: stable@dpdk.org

Signed-off-by: Wenzhuo Lu <58cb9036bdff9a5412edc3b9f70e105ccf59954f@intel.com>
Acked-by: Cristian Dumitrescu <25468b8a3698eeb3c368247f8635924bb4a1ce2c@intel.com>

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