rtc: pcf8523: Remove struct pcf8523

struct pcf8523 is referenced only by pcf8523_probe(). And member variable in
this is not referenced by any function. Remove struct pcf8523.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Link: https://lore.kernel.org/r/20191123090838.1619-1-nobuhiro1.iwamatsu@toshiba.co.jpSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-pcf8523.c

@@ -35,10 +35,6 @@
 #define REG_OFFSET   0x0e
 #define REG_OFFSET_MODE BIT(7)
 
-struct pcf8523 {
-	struct rtc_device *rtc;
-};
-
 static int pcf8523_read(struct i2c_client *client, u8 reg, u8 *valuep)
 {
 	struct i2c_msg msgs[2];
@@ -345,16 +341,12 @@ static const struct rtc_class_ops pcf8523_rtc_ops = {
 static int pcf8523_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
-	struct pcf8523 *pcf;
+	struct rtc_device *rtc;
 	int err;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
 		return -ENODEV;
 
-	pcf = devm_kzalloc(&client->dev, sizeof(*pcf), GFP_KERNEL);
-	if (!pcf)
-		return -ENOMEM;
-
 	err = pcf8523_load_capacitance(client);
 	if (err < 0)
 		dev_warn(&client->dev, "failed to set xtal load capacitance: %d",
@@ -364,12 +356,10 @@ static int pcf8523_probe(struct i2c_client *client,
 	if (err < 0)
 		return err;
 
-	pcf->rtc = devm_rtc_device_register(&client->dev, DRIVER_NAME,
+	rtc = devm_rtc_device_register(&client->dev, DRIVER_NAME,
 				       &pcf8523_rtc_ops, THIS_MODULE);
-	if (IS_ERR(pcf->rtc))
-		return PTR_ERR(pcf->rtc);
-
-	i2c_set_clientdata(client, pcf);
+	if (IS_ERR(rtc))
+		return PTR_ERR(rtc);
 
 	return 0;
 }