imu: inv_mpu6050: use devm_request_irq

This patch use the devres API for requesting an IRQ.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c

@@ -124,10 +124,11 @@ int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev)
 		ret = -ENOMEM;
 		goto error_ret;
 	}
-	ret = request_irq(st->client->irq, &iio_trigger_generic_data_rdy_poll,
-				IRQF_TRIGGER_RISING,
-				"inv_mpu",
-				st->trig);
+	ret = devm_request_irq(&indio_dev->dev, st->client->irq,
+			       &iio_trigger_generic_data_rdy_poll,
+			       IRQF_TRIGGER_RISING,
+			       "inv_mpu",
+			       st->trig);
 	if (ret)
 		goto error_ret;
 	st->trig->dev.parent = &st->client->dev;
@@ -135,13 +136,11 @@ int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev)
 	iio_trigger_set_drvdata(st->trig, indio_dev);
 	ret = iio_trigger_register(st->trig);
 	if (ret)
-		goto error_free_irq;
+		goto error_ret;
 	indio_dev->trig = iio_trigger_get(st->trig);
 
 	return 0;
 
-error_free_irq:
-	free_irq(st->client->irq, st->trig);
 error_ret:
 	return ret;
 }
@@ -149,5 +148,4 @@ int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev)
 void inv_mpu6050_remove_trigger(struct inv_mpu6050_state *st)
 {
 	iio_trigger_unregister(st->trig);
-	free_irq(st->client->irq, st->trig);
 }