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/lp486e.c b/drivers/net/lp486e.c
index 3df046a..3698824 100644
--- a/drivers/net/lp486e.c
+++ b/drivers/net/lp486e.c
@@ -460,7 +460,7 @@
 	}
 	lp->rbd_tail->next = rfd->rbd;
 #endif
-	return (i);
+	return i;
 }
 
 static inline void