net: mvpp2: Improve another size determination in mvpp2_init()

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.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2.c

@@ -6806,7 +6806,7 @@ static int mvpp2_init(struct platform_device *pdev, struct mvpp2 *priv)
 
 	/* Allocate and initialize aggregated TXQs */
 	priv->aggr_txqs = devm_kcalloc(&pdev->dev, num_present_cpus(),
-				       sizeof(struct mvpp2_tx_queue),
+				       sizeof(*priv->aggr_txqs),
 				       GFP_KERNEL);
 	if (!priv->aggr_txqs)
 		return -ENOMEM;