ath9k: correct warning about unintialized variable 'tid'

drivers/net/wireless/ath9k/xmit.c: In function ‘ath_tx_start’:
drivers/net/wireless/ath9k/xmit.c:1858: warning: ‘tid’ may be used uninitialized in this function

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c
index fe386b6dadac..8937728b0301 100644
--- a/drivers/net/wireless/ath9k/xmit.c
+++ b/drivers/net/wireless/ath9k/xmit.c
@@ -1859,11 +1859,6 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
         struct ath_hal *ah = sc->sc_ah;
         int frm_type;
 
-        if (tx_info->control.sta) {
-                an = (struct ath_node *)tx_info->control.sta->drv_priv;
-                tid = ATH_AN_2_TID(an, bf->bf_tidno);
-        }
-
         frm_type = get_hw_packet_type(skb);
 
         INIT_LIST_HEAD(&bf_head);
@@ -1890,7 +1885,11 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
 
         spin_lock_bh(&txctl->txq->axq_lock);
 
-        if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR)) {
+        if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR) &&
+            tx_info->control.sta) {
+                an = (struct ath_node *)tx_info->control.sta->drv_priv;
+                tid = ATH_AN_2_TID(an, bf->bf_tidno);
+
                 if (ath_aggr_query(sc, an, bf->bf_tidno)) {
                         /*
                          * Try aggregation if it's a unicast data frame