media: tegra_cec: fix the return value handle for platform_get_irq()

There is no possible for platform_get_irq() to return 0,
and the return value of platform_get_irq() is more sensible
to show the error reason.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/cec/platform/tegra/tegra_cec.c

@@ -348,8 +348,8 @@ static int tegra_cec_probe(struct platform_device *pdev)
 
 	cec->tegra_cec_irq = platform_get_irq(pdev, 0);
 
-	if (cec->tegra_cec_irq <= 0)
-		return -EBUSY;
+	if (cec->tegra_cec_irq < 0)
+		return cec->tegra_cec_irq;
 
 	cec->cec_base = devm_ioremap(&pdev->dev, res->start,
 					     resource_size(res));