drivers/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/drivers/net/typhoon.c b/drivers/net/typhoon.c
index 5dfb395..1cc6713 100644
--- a/drivers/net/typhoon.c
+++ b/drivers/net/typhoon.c
@@ -541,7 +541,7 @@
 
 	indexes->respCleared = cpu_to_le32(cleared);
 	wmb();
-	return (resp_save == NULL);
+	return resp_save == NULL;
 }
 
 static inline int