net/ice/base: fix minor issues

net/ice/base: fix minor issues

1. clean flow entry's action structure after remove it.
2. initialized priority when add a new flow entry
3. remove RSS configuration before deleting the flow profile.

Fixes: aa1cd410fa64 ("net/ice/base: add flow module")
Fixes: 51d04e4933e3 ("net/ice/base: add flexible pipeline module")

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Reviewed-by: Qiming Yang <qiming.yang@intel.com>
Reviewed-by: Wenzhuo Lu <wenzhuo.lu@intel.com>