mfd: pcf50633: Init pcf->dev before using it

Current code uses pcf->dev in the dev_err call before setting it to
&client->dev. Fix it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/pcf50633-core.c

@@ -208,6 +208,8 @@ static int pcf50633_probe(struct i2c_client *client,
 	if (!pcf)
 		return -ENOMEM;
 
+	i2c_set_clientdata(client, pcf);
+	pcf->dev = &client->dev;
 	pcf->pdata = pdata;
 
 	mutex_init(&pcf->lock);
@@ -219,9 +221,6 @@ static int pcf50633_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	i2c_set_clientdata(client, pcf);
-	pcf->dev = &client->dev;
-
 	version = pcf50633_reg_read(pcf, 0);
 	variant = pcf50633_reg_read(pcf, 1);
 	if (version < 0 || variant < 0) {