media: stm32-dcmi: fix irq = 0 case

Manage the irq = 0 case, where we shall return an error.

Fixes: b5b5a27b ("media: stm32-dcmi: return appropriate error codes during probe")
Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Reported-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/stm32/stm32-dcmi.c

@@ -1702,7 +1702,7 @@ static int dcmi_probe(struct platform_device *pdev)
 	if (irq <= 0) {
 		if (irq != -EPROBE_DEFER)
 			dev_err(&pdev->dev, "Could not get irq\n");
-		return irq;
+		return irq ? irq : -ENXIO;
 	}
 
 	dcmi->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);