ASoC: da7218: Improve a size determination in da7218_i2c_probe()

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/da7218.c

@@ -3269,8 +3269,7 @@ static int da7218_i2c_probe(struct i2c_client *i2c,
 	struct da7218_priv *da7218;
 	int ret;
 
-	da7218 = devm_kzalloc(&i2c->dev, sizeof(struct da7218_priv),
-			      GFP_KERNEL);
+	da7218 = devm_kzalloc(&i2c->dev, sizeof(*da7218), GFP_KERNEL);
 	if (!da7218)
 		return -ENOMEM;