iio: light: tsl2591: return actual error from probe IRQ failure

commit a00ffd1 upstream.

When devm_request_threaded_irq() fails, probe logs the error and
then returns -EINVAL, dropping the real error code and breaking the
deferred-probe flow for -EPROBE_DEFER.

Return ret directly; the IRQ subsystem already prints on failure.

Fixes: 2335f0d ("iio: light: Added AMS tsl2591 driver implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Stepan Ionichev <sozdayvek@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: root3315

drivers/iio/light/tsl2591.c

@@ -1139,10 +1139,8 @@ static int tsl2591_probe(struct i2c_client *client)
 						NULL, tsl2591_event_handler,
 						IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
 						"tsl2591_irq", indio_dev);
-		if (ret) {
-			dev_err_probe(&client->dev, ret, "IRQ request error\n");
-			return -EINVAL;
-		}
+		if (ret)
+			return ret;
 		indio_dev->info = &tsl2591_info;
 	} else {
 		indio_dev->info = &tsl2591_info_no_irq;