mcb: Delete num_cells variable which is not required

The num_cells variable is only used in the dev_dbg print,
but we can directly use the ret variable which also includes the same
value.

Signed-off-by: Andreas Werner <[e-mail]>
Signed-off-by: Johannes Thumshirn <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/mcb/mcb-pci.c

···
 	struct resource *res;
 	struct priv *priv;
 	int ret;
-	int num_cells;
 	unsigned long flags;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(struct priv), GFP_KERNEL);
···
 	ret = chameleon_parse_cells(priv->bus, priv->mapbase, priv->base);
 	if (ret < 0)
 		goto out_mcb_bus;
-	num_cells = ret;
 
-	dev_dbg(&pdev->dev, "Found %d cells\n", num_cells);
+	dev_dbg(&pdev->dev, "Found %d cells\n", ret);
 
 	mcb_bus_add_devices(priv->bus);