spi: stm32-qspi: manage the get_irq error case

During probe, check the "get_irq" error value.

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

drivers/spi/spi-stm32-qspi.c

···
 	}
 
 	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		if (irq != -EPROBE_DEFER)
+			dev_err(dev, "IRQ error missing or invalid\n");
+		return irq;
+	}
+
 	ret = devm_request_irq(dev, irq, stm32_qspi_irq, 0,
 			       dev_name(dev), qspi);
 	if (ret) {