Merge branch 'stmmac-dma-resources-fixes'

Christophe JAILLET says:

====================
net: stmmac: Fixes and cleanups in 'alloc_dma_[rt]x_desc_resources()'

These patchs are all related to 'alloc_dma_[rt]x_desc_resources()' functions.

The 2 first fix an error path where some resources are leaking. I've
separated them into 2 patches because the issues have been introduced by
2 deferent commits.

The 3rd patch is just a clean-up.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -1449,7 +1449,7 @@ static void free_dma_rx_desc_resources(struct stmmac_priv *priv)
 static void free_dma_tx_desc_resources(struct stmmac_priv *priv)
 {
 	u32 tx_count = priv->plat->tx_queues_to_use;
-	u32 queue = 0;
+	u32 queue;
 
 	/* Free TX queue resources */
 	for (queue = 0; queue < tx_count; queue++) {
@@ -1498,7 +1498,7 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
 						    sizeof(dma_addr_t),
 						    GFP_KERNEL);
 		if (!rx_q->rx_skbuff_dma)
-			return -ENOMEM;
+			goto err_dma;
 
 		rx_q->rx_skbuff = kmalloc_array(DMA_RX_SIZE,
 						sizeof(struct sk_buff *),
@@ -1561,13 +1561,13 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
 						    sizeof(*tx_q->tx_skbuff_dma),
 						    GFP_KERNEL);
 		if (!tx_q->tx_skbuff_dma)
-			return -ENOMEM;
+			goto err_dma;
 
 		tx_q->tx_skbuff = kmalloc_array(DMA_TX_SIZE,
 						sizeof(struct sk_buff *),
 						GFP_KERNEL);
 		if (!tx_q->tx_skbuff)
-			goto err_dma_buffers;
+			goto err_dma;
 
 		if (priv->extend_desc) {
 			tx_q->dma_etx = dma_zalloc_coherent(priv->device,
@@ -1577,7 +1577,7 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
 							    &tx_q->dma_tx_phy,
 							    GFP_KERNEL);
 			if (!tx_q->dma_etx)
-				goto err_dma_buffers;
+				goto err_dma;
 		} else {
 			tx_q->dma_tx = dma_zalloc_coherent(priv->device,
 							   DMA_TX_SIZE *
@@ -1586,13 +1586,13 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
 							   &tx_q->dma_tx_phy,
 							   GFP_KERNEL);
 			if (!tx_q->dma_tx)
-				goto err_dma_buffers;
+				goto err_dma;
 		}
 	}
 
 	return 0;
 
-err_dma_buffers:
+err_dma:
 	free_dma_tx_desc_resources(priv);
 
 	return ret;