[PATCH 6.12 112/337] net: sxgbe: free TX rings on RX allocation failure

Greg Kroah-Hartman <[email protected]>
Newsgroups dev.linux.lists.patches,org.kernel.vger.stable
Message-ID <[email protected]>
6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chenguang Zhao <[email protected]>

[ Upstream commit c870f7e2890b9f78ac84515a9809cc5c183c975e ]

When RX descriptor ring allocation fails, init_dma_desc_rings() only
frees the partially allocated RX rings and returns. The TX rings that
were allocated earlier in the same function are leaked.

Rearrange error labels to clean up TX rings upon RX failures.

Fixes: 1edb9ca69e8a ("net: sxgbe: add basic framework for Samsung 10Gb ethernet driver")
Signed-off-by: Chenguang Zhao <[email protected]>
Reviewed-by: Vadim Fedorenko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
index d2ba283f6123f..a4f457fa570d9 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
@@ -598,14 +598,13 @@ static int init_dma_desc_rings(struct net_device *netd)
 
 	return 0;
 
-txalloc_err:
-	while (queue_num--)
-		free_tx_ring(priv->device, priv->txq[queue_num], tx_rsize);
-	return ret;
-
 rxalloc_err:
 	while (queue_num--)
 		free_rx_ring(priv->device, priv->rxq[queue_num], rx_rsize);
+	queue_num = SXGBE_TX_QUEUES;
+txalloc_err:
+	while (queue_num--)
+		free_tx_ring(priv->device, priv->txq[queue_num], tx_rsize);
 	return ret;
 }
 
-- 
2.53.0
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