i40evf: Use an iterator of the same type as the list

When iterating through the linked list of VLAN filters, make the
iterator the same type as that of the linked list.

Signed-off-by: Harshitha Ramamurthy <harshitha.ramamurthy@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40evf/i40evf_main.c

@@ -1027,6 +1027,7 @@ static void i40evf_up_complete(struct i40evf_adapter *adapter)
 void i40evf_down(struct i40evf_adapter *adapter)
 {
 	struct net_device *netdev = adapter->netdev;
+	struct i40evf_vlan_filter *vlf;
 	struct i40evf_mac_filter *f;
 
 	if (adapter->state <= __I40EVF_DOWN_PENDING)
@@ -1045,7 +1046,7 @@ void i40evf_down(struct i40evf_adapter *adapter)
 		f->remove = true;
 	}
 	/* remove all VLAN filters */
-	list_for_each_entry(f, &adapter->vlan_filter_list, list) {
+	list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
 		f->remove = true;
 	}
 
@@ -3067,6 +3068,7 @@ static void i40evf_remove(struct pci_dev *pdev)
 {
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct i40evf_adapter *adapter = netdev_priv(netdev);
+	struct i40evf_vlan_filter *vlf, *vlftmp;
 	struct i40evf_mac_filter *f, *ftmp;
 	struct i40e_hw *hw = &adapter->hw;
 	int err;
@@ -3129,9 +3131,10 @@ static void i40evf_remove(struct pci_dev *pdev)
 		list_del(&f->list);
 		kfree(f);
 	}
-	list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
-		list_del(&f->list);
-		kfree(f);
+	list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
+				 list) {
+		list_del(&vlf->list);
+		kfree(vlf);
 	}
 
 	spin_unlock_bh(&adapter->mac_vlan_list_lock);