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/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 845be71..44f4d58 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -985,7 +985,7 @@
 static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue,
 						  unsigned int index)
 {
-	return (&rx_queue->buffer[index]);
+	return &rx_queue->buffer[index];
 }
 
 /* Set bit in a little-endian bitfield */