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 <[e-mail]>
Fixes: 03a3180e5c09e1 ("net: ethernet: mtk_eth_soc: introduce flow offloading support for mt7986")
Signed-off-by: Daniel Golle <[e-mail]>
Acked-by: Lorenzo Bianconi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/mediatek/mtk_ppe.c

···
 {
 	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);