platform/x86: wmi: Fix wmi_dev_probe()

This has a reversed if statement so it accidentally disables the wmi
method before returning.

Fixes: 704af3a ("platform/x86: wmi: Remove chardev interface")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/9c81251b-bc87-4ca3-bb86-843dc85e5145@moroto.mountain
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Author: Dan Carpenter

drivers/platform/x86/wmi.c

@@ -896,7 +896,7 @@ static int wmi_dev_probe(struct device *dev)
 	if (wdriver->probe) {
 		ret = wdriver->probe(dev_to_wdev(dev),
 				find_guid_context(wblock, wdriver));
-		if (!ret) {
+		if (ret) {
 			if (ACPI_FAILURE(wmi_method_enable(wblock, false)))
 				dev_warn(dev, "Failed to disable device\n");