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/core/flow.c b/net/core/flow.c
index b143b86..127c8a7 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -176,8 +176,8 @@
 {
 	u32 *k = (u32 *) key;
 
-	return (jhash2(k, (sizeof(*key) / sizeof(u32)), fcp->hash_rnd)
-		& (flow_cache_hash_size(fc) - 1));
+	return jhash2(k, (sizeof(*key) / sizeof(u32)), fcp->hash_rnd)
+		& (flow_cache_hash_size(fc) - 1);
 }
 
 typedef unsigned long flow_compare_t;