spi: stm32: return the get_irq error

During probe, return the "get_irq" error value instead of -ENOENT. This
allows the driver to be defer probed if needed.

Signed-off-by: Fabien Dessenne <[e-mail]>
Acked-by: Amelie Delaunay <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-stm32.c

···
 
 	spi->irq = platform_get_irq(pdev, 0);
 	if (spi->irq <= 0) {
-		dev_err(&pdev->dev, "no irq: %d\n", spi->irq);
-		ret = -ENOENT;
+		ret = spi->irq;
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get irq: %d\n", ret);
 		goto err_master_put;
 	}
 	ret = devm_request_threaded_irq(&pdev->dev, spi->irq,