net: ethernet: mtk_eth_soc: fix wrong use of new helper function

In function mtk_foe_entry_set_vlan() the call to field accessor macro
FIELD_GET(MTK_FOE_IB1_BIND_VLAN_LAYER, entry->ib1)
has been wrongly replaced by
mtk_prep_ib1_vlan_layer(eth, entry->ib1)

Use correct helper function mtk_get_ib1_vlan_layer instead.
Reported-by: Chen Minqiang <ptpt52@gmail.com>
Fixes: 03a3180e ("net: ethernet: mtk_eth_soc: introduce flow offloading support for mt7986")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/YzBp+Kk04CFDys4L@makrotopia.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mediatek/mtk_ppe.c

@@ -337,7 +337,7 @@ int mtk_foe_entry_set_vlan(struct mtk_eth *eth, struct mtk_foe_entry *entry,
 {
 	struct mtk_foe_mac_info *l2 = mtk_foe_entry_l2(eth, entry);
 
-	switch (mtk_prep_ib1_vlan_layer(eth, entry->ib1)) {
+	switch (mtk_get_ib1_vlan_layer(eth, entry->ib1)) {
 	case 0:
 		entry->ib1 |= mtk_get_ib1_vlan_tag_mask(eth) |
 			      mtk_prep_ib1_vlan_layer(eth, 1);