net: mvpp2: use RSS only when using multi-queue mode

Since RSS only applies when we have per-cpu rx queues, it should only
be enabled when the driver is configured to make use of multi-queue
mode.
Signed-off-by: NYan Markman <ymarkman@marvell.com>
[Maxime: Commit message]
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

@@ -3276,6 +3276,11 @@ static void mvpp2_irqs_deinit(struct mvpp2_port *port)
 	}
 }
 
+static bool mvpp22_rss_is_supported(void)
+{
+	return queue_mode == MVPP2_QDIST_MULTI_MODE;
+}
+
 static int mvpp2_open(struct net_device *dev)
 {
 	struct mvpp2_port *port = netdev_priv(dev);
@@ -3368,7 +3373,7 @@ static int mvpp2_open(struct net_device *dev)
 
 	mvpp2_start_dev(port);
 
-	if (priv->hw_version == MVPP22)
+	if (mvpp22_rss_is_supported())
 		mvpp22_init_rss(port);
 
 	/* Start hardware statistics gathering */