iio: adc: max1363: merge calls to of_match_device and of_device_get_match_data

Drop call to of_match_device, which is subsumed by the subsequent
call to of_device_get_match_data.  The code becomes simpler, and a
temporary variable can be dropped.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression match;
identifier i;
expression x, dev, e, e1;
@@
-        match@i = of_match_device(x, dev);
-        if (match) e = of_device_get_match_data(dev);
-        else e = e1;
+        e = of_device_get_match_data(dev);
+        if (!e) e = e1;

@@
identifier r.i;
@@
- const struct of_device_id *i;
... when != i
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/max1363.c

@@ -1577,7 +1577,6 @@ static int max1363_probe(struct i2c_client *client,
 	struct max1363_state *st;
 	struct iio_dev *indio_dev;
 	struct regulator *vref;
-	const struct of_device_id *match;
 
 	indio_dev = devm_iio_device_alloc(&client->dev,
 					  sizeof(struct max1363_state));
@@ -1604,11 +1603,8 @@ static int max1363_probe(struct i2c_client *client,
 	/* this is only used for device removal purposes */
 	i2c_set_clientdata(client, indio_dev);
 
-	match = of_match_device(of_match_ptr(max1363_of_match),
-				&client->dev);
-	if (match)
-		st->chip_info = of_device_get_match_data(&client->dev);
-	else
+	st->chip_info = of_device_get_match_data(&client->dev);
+	if (!st->chip_info)
 		st->chip_info = &max1363_chip_info_tbl[id->driver_data];
 	st->client = client;