can: c_can: Do not check for 0 return after calling platform_get_irq()

It is not possible for platform_get_irq() to return 0. Use the
return value from platform_get_irq().
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/all/20230802030900.2271322-1-ruanjinjie@huawei.comSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/c_can/c_can_platform.c

@@ -285,8 +285,8 @@ static int c_can_plat_probe(struct platform_device *pdev)
 
 	/* get the platform data */
 	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0) {
-		ret = -ENODEV;
+	if (irq < 0) {
+		ret = irq;
 		goto exit;
 	}