can: cc770: Fix use after free in cc770_tx_interrupt()

This fixes use after free introduced by the last cc770 patch.

Signed-off-by: Andri Yngvason <andri.yngvason@marel.com>
Fixes: 746201235b3f ("can: cc770: Fix queue stall & dropped RTR reply")
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c
index 2743d82d4424..6da69af103e6 100644
--- a/drivers/net/can/cc770/cc770.c
+++ b/drivers/net/can/cc770/cc770.c
@@ -706,13 +706,12 @@ static void cc770_tx_interrupt(struct net_device *dev, unsigned int o)
                 return;
         }
 
-        can_put_echo_skb(priv->tx_skb, dev, 0);
-        can_get_echo_skb(dev, 0);
-
         cf = (struct can_frame *)priv->tx_skb->data;
         stats->tx_bytes += cf->can_dlc;
         stats->tx_packets++;
 
+        can_put_echo_skb(priv->tx_skb, dev, 0);
+        can_get_echo_skb(dev, 0);
         priv->tx_skb = NULL;
 
         netif_wake_queue(dev);