[PATCH 5.15 058/110] net: ieee802154: ca8210: Stop leaking skbs

[Greg Kroah-Hartman]

From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>

commit 621b24b09eb61c63f262da0c9c5f0e93348897e5 upstream.

Upon error the ieee802154_xmit_complete() helper is not called. Only
ieee802154_wake_queue() is called manually. We then leak the skb
structure.

Free the skb structure upon error before returning.

Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Acked-by: Alexander Aring <aahringo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220125121426.848337-5-miquel.raynal@xxxxxxxxxxx
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ieee802154/ca8210.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -1771,6 +1771,7 @@ static int ca8210_async_xmit_complete(
 			status
 		);
 		if (status != MAC_TRANSACTION_OVERFLOW) {
+			dev_kfree_skb_any(priv->tx_skb);
 			ieee802154_wake_queue(priv->hw);
 			return 0;
 		}