[PATCH v2] net: stmmac: fix RX DMA leak on TX alloc failure

[Abid Ali via B4 Relay]

From: Abid Ali <dev.taqnialabs at gmail.com>

Free RX DMA resources when alloc_dma_tx_desc_resources() fails in
alloc_dma_desc_resources().

Signed-off-by: Abid Ali <dev.taqnialabs at gmail.com>
---
Changes in v2:
- Restructured return path based on feedback.
- Link to v1: https://lore.kernel.org/r/20260425-stmmac-rx-desc-cleanup-v1-1-1a18a704c422@gmail.com
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 13d3cac05..240453daa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2370,6 +2370,8 @@ static int alloc_dma_desc_resources(struct stmmac_priv *priv,
 		return ret;
 
 	ret = alloc_dma_tx_desc_resources(priv, dma_conf);
+	if (ret)
+		free_dma_rx_desc_resources(priv, dma_conf);
 
 	return ret;
 }

---
base-commit: 028ef9c96e96197026887c0f092424679298aae8
change-id: 20260425-stmmac-rx-desc-cleanup-440f05845492

Best regards,
-- 
Abid Ali <dev.taqnialabs at gmail.com>