mwifiex: pass priv pointer instead of adapter

Pass mwifiex_private pointer directly to wmm_add_buf_txqueue()
instead of passing adapter and then deriving priv again in
mwifiex_get_priv_by_id(). This reduces a 'for' loop in TX path.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
index e6a2cb1..75f79ef 100644
--- a/drivers/net/wireless/mwifiex/wmm.c
+++ b/drivers/net/wireless/mwifiex/wmm.c
@@ -599,12 +599,10 @@
  * is queued at the list tail.
  */
 void
-mwifiex_wmm_add_buf_txqueue(struct mwifiex_adapter *adapter,
+mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
 			    struct sk_buff *skb)
 {
-	struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
-	struct mwifiex_private *priv = mwifiex_get_priv_by_id(adapter,
-			tx_info->bss_num, tx_info->bss_type);
+	struct mwifiex_adapter *adapter = priv->adapter;
 	u32 tid;
 	struct mwifiex_ra_list_tbl *ra_list;
 	u8 ra[ETH_ALEN], tid_down;