net/core: make use of the helper macro LIST_HEAD()

list_head can be initialized automatically with LIST_HEAD()
instead of calling INIT_LIST_HEAD(). Here we can simplify
the code.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://patch.msgid.link/20240904093243.3345012-6-lihongbo22@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/core/dev.c

@@ -5727,10 +5727,9 @@ static void __netif_receive_skb_list_core(struct list_head *head, bool pfmemallo
 	struct packet_type *pt_curr = NULL;
 	/* Current (common) orig_dev of sublist */
 	struct net_device *od_curr = NULL;
-	struct list_head sublist;
 	struct sk_buff *skb, *next;
+	LIST_HEAD(sublist);
 
-	INIT_LIST_HEAD(&sublist);
 	list_for_each_entry_safe(skb, next, head, list) {
 		struct net_device *orig_dev = skb->dev;
 		struct packet_type *pt_prev = NULL;
@@ -5868,9 +5867,8 @@ static int netif_receive_skb_internal(struct sk_buff *skb)
 void netif_receive_skb_list_internal(struct list_head *head)
 {
 	struct sk_buff *skb, *next;
-	struct list_head sublist;
+	LIST_HEAD(sublist);
 
-	INIT_LIST_HEAD(&sublist);
 	list_for_each_entry_safe(skb, next, head, list) {
 		net_timestamp_check(READ_ONCE(net_hotdata.tstamp_prequeue),
 				    skb);