net: macb: fix call to pm_runtime in the suspend/resume functions

The calls to pm_runtime_force_suspend/resume() functions are only
relevant if the device is not configured to act as a WoL wakeup source.
Add the device_may_wakeup() test before calling them.

Fixes: 3e2a5e15 ("net: macb: add wake-on-lan support via magic packet")
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: Harini Katakam <harini.katakam@xilinx.com>
Cc: Sergio Prado <sergio.prado@e-labworks.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cadence/macb_main.c

@@ -4606,6 +4606,7 @@ static int __maybe_unused macb_suspend(struct device *dev)
 
 	if (bp->ptp_info)
 		bp->ptp_info->ptp_remove(netdev);
+	if (!device_may_wakeup(dev))
 		pm_runtime_force_suspend(dev);
 
 	return 0;
@@ -4621,6 +4622,7 @@ static int __maybe_unused macb_resume(struct device *dev)
 	if (!netif_running(netdev))
 		return 0;
 
+	if (!device_may_wakeup(dev))
 		pm_runtime_force_resume(dev);
 
 	if (bp->wol & MACB_WOL_ENABLED) {