We don't need to disable coalescing when the interrupt handler executes
while the chip is suspended. The coalescing is already reset during
suspend.
Fixes: 07f25091ca02 ("can: m_can: Implement receive coalescing")
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240805183047.305630-3-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
 
        struct m_can_classdev *cdev = netdev_priv(dev);
        u32 ir;
 
-       if (pm_runtime_suspended(cdev->dev)) {
-               m_can_coalescing_disable(cdev);
+       if (pm_runtime_suspended(cdev->dev))
                return IRQ_NONE;
-       }
 
        ir = m_can_read(cdev, M_CAN_IR);
        m_can_coalescing_update(cdev, ir);