mt76: mt7615: fix memory leak in mt7615_coredump_work

Similar to the issue fixed in mt7921_coredump_work, fix a possible memory
leak in mt7615_coredump_work routine.

Fixes: d2bf7959d9c0f ("mt76: mt7663: introduce coredump support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

mt7615/mac.c

@@ -2352,8 +2352,10 @@ void mt7615_coredump_work(struct work_struct *work)
 			break;
 
 		skb_pull(skb, sizeof(struct mt7615_mcu_rxd));
-		if (data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ)
-			break;
+		if (data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) {
+			dev_kfree_skb(skb);
+			continue;
+		}
 
 		memcpy(data, skb->data, skb->len);
 		data += skb->len;