mwifiex: use PCI_DMA_FROMDEVICE for RX queue de-init

There is a typo in mwifiex_cleanup_rxq_ring() which uses
PCI_DMA_TODEVICE while unmapping PCI memory.
We should actually use PCI_DMA_FROMDEVICE.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/pcie.c

@@ -572,7 +572,7 @@ static void mwifiex_cleanup_rxq_ring(struct mwifiex_adapter *adapter)
 			if (card->rx_buf_list[i]) {
 				skb = card->rx_buf_list[i];
 				pci_unmap_single(card->dev, desc2->paddr,
-						 skb->len, PCI_DMA_TODEVICE);
+						 skb->len, PCI_DMA_FROMDEVICE);
 				dev_kfree_skb_any(skb);
 			}
 			memset(desc2, 0, sizeof(*desc2));
@@ -581,7 +581,7 @@ static void mwifiex_cleanup_rxq_ring(struct mwifiex_adapter *adapter)
 			if (card->rx_buf_list[i]) {
 				skb = card->rx_buf_list[i];
 				pci_unmap_single(card->dev, desc->paddr,
-						 skb->len, PCI_DMA_TODEVICE);
+						 skb->len, PCI_DMA_FROMDEVICE);
 				dev_kfree_skb_any(skb);
 			}
 			memset(desc, 0, sizeof(*desc));