ath: remove unnecessary return in ath_regd_get_band_ctl

'default' case already returns NO_CTL
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/regd.c

@@ -569,7 +569,5 @@ u32 ath_regd_get_band_ctl(struct ath_regulatory *reg,
 	default:
 		return NO_CTL;
 	}
-
-	return NO_CTL;
 }
 EXPORT_SYMBOL(ath_regd_get_band_ctl);