platform/x86: fujitsu-laptop: ignore errors when setting backlight power

Not all Fujitsu laptops support controlling backlight power through the
FUJ02E3 ACPI device.  Remove the debug message informing about a failed
attempt to set backlight power as it may be confusing and the return
value of call_fext_func() is logged anyway.
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

drivers/platform/x86/fujitsu-laptop.c

@@ -430,13 +430,9 @@ static int bl_update_status(struct backlight_device *b)
 {
 	int ret;
 	if (b->props.power == FB_BLANK_POWERDOWN)
-		ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
+		call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
 	else
-		ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
-	if (ret != 0)
-		vdbg_printk(FUJLAPTOP_DBG_ERROR,
-			"Unable to adjust backlight power, error code %i\n",
-			ret);
+		call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
 
 	ret = set_lcd_level(b->props.brightness);
 	if (ret != 0)