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/inet_ecn.h b/include/net/inet_ecn.h
index 9b5d08f..88bdd01 100644
--- a/include/net/inet_ecn.h
+++ b/include/net/inet_ecn.h
@@ -27,7 +27,7 @@
 
 static inline int INET_ECN_is_capable(__u8 dsfield)
 {
-	return (dsfield & INET_ECN_ECT_0);
+	return dsfield & INET_ECN_ECT_0;
 }
 
 static inline __u8 INET_ECN_encapsulate(__u8 outer, __u8 inner)