mfd: smsc-ece1099: Improve a size determination in smsc_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>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/smsc-ece1099.c

@@ -37,8 +37,7 @@ static int smsc_i2c_probe(struct i2c_client *i2c,
 	int devid, rev, venid_l, venid_h;
 	int ret;
 
-	smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
-				GFP_KERNEL);
+	smsc = devm_kzalloc(&i2c->dev, sizeof(*smsc), GFP_KERNEL);
 	if (!smsc)
 		return -ENOMEM;