ice: Add more usage of existing function ice_get_vf_vsi(vf)

Extend the usage of function ice_get_vf_vsi(vf) in multiple places
instead of VF's VSI by using a long string of dereferences
(i.e. vf->pf->vsi[vf->lan_vsi_idx]).
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Kalyan Kodamagula <kalyan.kodamagula@intel.com>
Tested-by: Piotr Tyda <piotr.tyda@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c

@@ -113,7 +113,7 @@ ice_vc_fdir_param_check(struct ice_vf *vf, u16 vsi_id)
 	if (!ice_vc_isvalid_vsi_id(vf, vsi_id))
 		return -EINVAL;
 
-	if (!pf->vsi[vf->lan_vsi_idx])
+	if (!ice_get_vf_vsi(vf))
 		return -EINVAL;
 
 	return 0;
@@ -494,7 +494,7 @@ ice_vc_fdir_rem_prof(struct ice_vf *vf, enum ice_fltr_ptype flow, int tun)
 
 	vf_prof = fdir->fdir_prof[flow];
 
-	vf_vsi = pf->vsi[vf->lan_vsi_idx];
+	vf_vsi = ice_get_vf_vsi(vf);
 	if (!vf_vsi) {
 		dev_dbg(dev, "NULL vf %d vsi pointer\n", vf->vf_id);
 		return;
@@ -572,7 +572,7 @@ ice_vc_fdir_write_flow_prof(struct ice_vf *vf, enum ice_fltr_ptype flow,
 	pf = vf->pf;
 	dev = ice_pf_to_dev(pf);
 	hw = &pf->hw;
-	vf_vsi = pf->vsi[vf->lan_vsi_idx];
+	vf_vsi = ice_get_vf_vsi(vf);
 	if (!vf_vsi)
 		return -EINVAL;
 
@@ -1205,7 +1205,7 @@ static int ice_vc_fdir_write_fltr(struct ice_vf *vf,
 	pf = vf->pf;
 	dev = ice_pf_to_dev(pf);
 	hw = &pf->hw;
-	vsi = pf->vsi[vf->lan_vsi_idx];
+	vsi = ice_get_vf_vsi(vf);
 	if (!vsi) {
 		dev_dbg(dev, "Invalid vsi for VF %d\n", vf->vf_id);
 		return -EINVAL;