media: i2c: mt9m111: Use %pe format specifier

The %pe format specifier is designed to print error pointers. It prints
a symbolic error name (eg. -EINVAL) and it makes the code simpler by
omitting PTR_ERR().

This patch fixes this cocci report:
./i2c/mt9m111.c:1290:3-10: WARNING: Consider using %pe to print PTR_ERR()

Signed-off-by: Ricardo Ribalda <[e-mail]>
Acked-by: Sakari Ailus <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/i2c/mt9m111.c

···
 
 	mt9m111->regulator = devm_regulator_get(&client->dev, "vdd");
 	if (IS_ERR(mt9m111->regulator)) {
-		dev_err(&client->dev, "regulator not found: %ld\n",
-			PTR_ERR(mt9m111->regulator));
+		dev_err(&client->dev, "regulator not found: %pe\n",
+			mt9m111->regulator);
 		return PTR_ERR(mt9m111->regulator);
 	}