iio: adc: stm32-adc: Fix race in installing chained IRQ handler

Fix a race where a pending interrupt could be received and the handler
called before the handler's data has been setup, by converting to
irq_set_chained_handler_and_data().

Fixes: 1add69880240 ("iio: adc: Add support for STM32 ADC core")
Signed-off-by: Chen Ni <[e-mail]>
Reviewed-by: Nuno Sá <[e-mail]>
Tested-by: Fabrice Gasnier <[e-mail]>
Reviewed-by: Fabrice Gasnier <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Cc: <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/adc/stm32-adc-core.c

···
 		return -ENOMEM;
 	}
 
-	for (i = 0; i < priv->cfg->num_irqs; i++) {
-		irq_set_chained_handler(priv->irq[i], stm32_adc_irq_handler);
-		irq_set_handler_data(priv->irq[i], priv);
-	}
+	for (i = 0; i < priv->cfg->num_irqs; i++)
+		irq_set_chained_handler_and_data(priv->irq[i],
+						 stm32_adc_irq_handler, priv);
 
 	return 0;
 }