[patch net-next] sfc: remove unneeded variable

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

We don't use ->heap_buf after commit 46d1efd852cc ("sfc: remove Software
TSO") so let's remove the last traces.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index f97f828..fd17bda 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -139,8 +139,6 @@ struct efx_special_buffer {
  * struct efx_tx_buffer - buffer state for a TX descriptor
  * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be
  *	freed when descriptor completes
- * @heap_buf: When @flags & %EFX_TX_BUF_HEAP, the associated heap buffer to be
- *	freed when descriptor completes.
  * @option: When @flags & %EFX_TX_BUF_OPTION, a NIC-specific option descriptor.
  * @dma_addr: DMA address of the fragment.
  * @flags: Flags for allocation and DMA mapping type
@@ -151,10 +149,7 @@ struct efx_special_buffer {
  * Only valid if @unmap_len != 0.
  */
 struct efx_tx_buffer {
-	union {
-		const struct sk_buff *skb;
-		void *heap_buf;
-	};
+	const struct sk_buff *skb;
 	union {
 		efx_qword_t option;
 		dma_addr_t dma_addr;
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 1aa728c..bb07034 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -84,8 +84,6 @@ static void efx_dequeue_buffer(struct efx_tx_queue *tx_queue,
 		netif_vdbg(tx_queue->efx, tx_done, tx_queue->efx->net_dev,
 			   "TX queue %d transmission id %x complete\n",
 			   tx_queue->queue, tx_queue->read_count);
-	} else if (buffer->flags & EFX_TX_BUF_HEAP) {
-		kfree(buffer->heap_buf);
 	}
 
 	buffer->len = 0;
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