ath9k: remove unused stepdown when looking for the next rate

This is not used, remove this.

Cc: Derek Smithies <derek@indranet.co.nz>
Cc: Chittajit Mitra <Chittajit.Mitra@Atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/rc.c

@@ -817,19 +817,14 @@ static void ath_rc_rate_set_rtscts(struct ath_softc *sc,
 static u8 ath_rc_rate_getidx(struct ath_softc *sc,
 			     struct ath_rate_priv *ath_rc_priv,
 			     const struct ath_rate_table *rate_table,
-			     u8 rix, u16 stepdown)
+			     u8 rix)
 {
-	u32 j;
 	u8 nextindex = 0;
-
-	for (j = stepdown; j > 0; j--) {
-		if (ath_rc_get_nextlowervalid_txrate(rate_table,
-					ath_rc_priv, rix, &nextindex))
-			rix = nextindex;
-		else
-			break;
-	}
-	return rix;
+	if (ath_rc_get_nextlowervalid_txrate(rate_table,
+					     ath_rc_priv, rix, &nextindex))
+		return nextindex;
+	else
+		return rix;
 }
 
 static void ath_rc_ratefind(struct ath_softc *sc,
@@ -871,7 +866,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
 		 * after the probe rate
 		 */
 		nrix = ath_rc_rate_getidx(sc, ath_rc_priv,
-					  rate_table, nrix, 1);
+					  rate_table, nrix);
 		ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
 				       try_per_rate, nrix, 0);
 
@@ -889,7 +884,7 @@ static void ath_rc_ratefind(struct ath_softc *sc,
 			try_per_rate = 4;
 
 		nrix = ath_rc_rate_getidx(sc, ath_rc_priv,
-					  rate_table, nrix, 1);
+					  rate_table, nrix);
 		/* All other rates in the series have RTS enabled */
 		ath_rc_rate_set_series(rate_table, &rates[i], txrc,
 				       try_per_rate, nrix, 1);