bnx2x: remove unnecessary dma_sync

static inline void bnx2x_reuse_rx_skb(struct bnx2x_fastpath *fp,

				      u16 cons, u16 prod)

{

	struct bnx2x *bp = fp->bp;

	struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];

	struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];

	struct eth_rx_bd *cons_bd = &fp->rx_desc_ring[cons];

	struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];

	dma_sync_single_for_device(&bp->pdev->dev,

				   dma_unmap_addr(cons_rx_buf, mapping),

				   RX_COPY_THRESH, DMA_FROM_DEVICE);

	dma_unmap_addr_set(prod_rx_buf, mapping,

			   dma_unmap_addr(cons_rx_buf, mapping));

	prod_rx_buf->skb = cons_rx_buf->skb;