net: return operator cleanup

Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 4f772de..b0cc385 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -207,7 +207,7 @@
 
 	fc = hdr->frame_control;
 
-	return ((info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc));
+	return (info->flags & IEEE80211_TX_CTL_NO_ACK) || !ieee80211_is_data(fc);
 }
 
 static void rc_send_low_broadcast(s8 *idx, u32 basic_rates, u8 max_rate_idx)