net/ice/base: remove null check of port info

net/ice/base: remove null check of port info

The code in ice_sched_cleanup_all checks whether the port info is NULL
prior to calling ice_sched_clear_port.

More importantly, it also checks whether the port structure has been
initialized by checking its port_state field as well.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>