mac80211: move A-MSDU skb_linearize call to ieee80211_amsdu_to_8023s

Prepararation for zero-copy A-MSDU support with page fragment SKBs
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/rx.c

@@ -2223,9 +2223,6 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
 	skb->dev = dev;
 	__skb_queue_head_init(&frame_list);
 
-	if (skb_linearize(skb))
-		return RX_DROP_UNUSABLE;
-
 	ieee80211_amsdu_to_8023s(skb, &frame_list, dev->dev_addr,
 				 rx->sdata->vif.type,
 				 rx->local->hw.extra_tx_headroom, true);

net/wireless/util.c

@@ -657,6 +657,9 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
 	int remaining, err;
 	u8 dst[ETH_ALEN], src[ETH_ALEN];
 
+	if (skb_linearize(skb))
+		goto out;
+
 	if (has_80211_header) {
 		err = ieee80211_data_to_8023(skb, addr, iftype);
 		if (err)