power: supply: rk817: Simplify an error message

dev_err_probe() already display the error code. There is no need to
duplicate it explicitly in the error message.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/rk817_charger.c

@@ -1134,7 +1134,7 @@ static int rk817_charger_probe(struct platform_device *pdev)
 					    &bat_info);
 	if (ret) {
 		return dev_err_probe(dev, ret,
-				     "Unable to get battery info: %d\n", ret);
+				     "Unable to get battery info\n");
 	}
 
 	if ((bat_info->charge_full_design_uah <= 0) ||