[PATCH net-next] net: airoha: Fix forever loops in error handling

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These loops have ++ where -- was intended.  It would end up looping until
the system died.

Fixes: 23020f049327 ("net: airoha: Introduce ethernet support for EN7581 SoC")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/net/ethernet/mediatek/airoha_eth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/airoha_eth.c b/drivers/net/ethernet/mediatek/airoha_eth.c
index 7967a92803c2..698835dc6da0 100644
--- a/drivers/net/ethernet/mediatek/airoha_eth.c
+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
@@ -977,7 +977,7 @@ static int airoha_set_gdm_ports(struct airoha_eth *eth, bool enable)
 	return 0;
 
 error:
-	for (i--; i >= 0; i++)
+	while (--i >= 0)
 		airoha_set_gdm_port(eth, port_list[i], false);
 
 	return err;
@@ -2431,7 +2431,7 @@ static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb,
 	return NETDEV_TX_OK;
 
 error_unmap:
-	for (i--; i >= 0; i++)
+	while (--i >= 0)
 		dma_unmap_single(dev->dev.parent, q->entry[i].dma_addr,
 				 q->entry[i].dma_len, DMA_TO_DEVICE);
 
-- 
2.43.0





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