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/include/net/sctp/tsnmap.h b/include/net/sctp/tsnmap.h
index 4aabc5a..e7728bc 100644
--- a/include/net/sctp/tsnmap.h
+++ b/include/net/sctp/tsnmap.h
@@ -157,7 +157,7 @@
 /* Is there a gap in the TSN map?  */
 static inline int sctp_tsnmap_has_gap(const struct sctp_tsnmap *map)
 {
-	return (map->cumulative_tsn_ack_point != map->max_tsn_seen);
+	return map->cumulative_tsn_ack_point != map->max_tsn_seen;
 }
 
 /* Mark a duplicate TSN.  Note:  limit the storage of duplicate TSN