ath9k: fix drv_tx_last_beacon on AR9003 by processing beacon tx status

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 5dd27d2..9f78501 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -2296,9 +2296,12 @@
 			break;
 		}
 
-		/* Skip beacon completions */
-		if (ts.qid == sc->beacon.beaconq)
+		/* Process beacon completions separately */
+		if (ts.qid == sc->beacon.beaconq) {
+			sc->beacon.tx_processed = true;
+			sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK);
 			continue;
+		}
 
 		txq = &sc->tx.txq[ts.qid];