ice: return pointer to representor

In follow up patches it will be easier to obtain created port
representor pointer instead of the id. Without it the pattern from
eswitch side will look like:
- create PR
- get PR based on the id

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Author: Michal Swiatkowski

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

@@ -382,19 +382,19 @@ ice_repr_add(struct ice_pf *pf, struct ice_vsi *src_vsi, const u8 *parent_mac)
 	return ERR_PTR(err);
 }
 
-static int ice_repr_add_vf(struct ice_vf *vf)
+static struct ice_repr *ice_repr_add_vf(struct ice_vf *vf)
 {
 	struct ice_repr *repr;
 	struct ice_vsi *vsi;
 	int err;
 
 	vsi = ice_get_vf_vsi(vf);
 	if (!vsi)
-		return -EINVAL;
+		return ERR_PTR(-ENOENT);
 
 	err = ice_devlink_create_vf_port(vf);
 	if (err)
-		return err;
+		return ERR_PTR(err);
 
 	repr = ice_repr_add(vf->pf, vsi, vf->hw_lan_addr);
 	if (IS_ERR(repr)) {
@@ -416,13 +416,13 @@ static int ice_repr_add_vf(struct ice_vf *vf)
 
 	ice_virtchnl_set_repr_ops(vf);
 
-	return 0;
+	return repr;
 
 err_netdev:
 	ice_repr_rem(&vf->pf->eswitch.reprs, repr);
 err_repr_add:
 	ice_devlink_destroy_vf_port(vf);
-	return err;
+	return ERR_PTR(err);
 }
 
 /**
@@ -432,16 +432,19 @@ static int ice_repr_add_vf(struct ice_vf *vf)
 int ice_repr_add_for_all_vfs(struct ice_pf *pf)
 {
 	struct devlink *devlink;
+	struct ice_repr *repr;
 	struct ice_vf *vf;
 	unsigned int bkt;
 	int err;
 
 	lockdep_assert_held(&pf->vfs.table_lock);
 
 	ice_for_each_vf(pf, bkt, vf) {
-		err = ice_repr_add_vf(vf);
-		if (err)
+		repr = ice_repr_add_vf(vf);
+		if (IS_ERR(repr)) {
+			err = PTR_ERR(repr);
 			goto err;
+		}
 	}
 
 	/* only export if ADQ and DCB disabled */