platform/x86: intel/smartconnect: Check ACPI_HANDLE() against NULL

Every platform driver can be forced to match a device that doesn't match
its list of device IDs because of device_match_driver_override(), so
platform drivers that rely on the existence of a device's ACPI companion
object need to verify its presence.

Accordingly, add a requisite ACPI_HANDLE() check against NULL to the
platform/x86 intel/smartconnect driver.

Fixes: 8a44bd3 ("platform/x86: intel/smartconnect: Convert ACPI driver to a platform one")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/7956676.EvYhyI6sBW@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: rafaeljw

drivers/platform/x86/intel/smartconnect.c

@@ -12,10 +12,14 @@ MODULE_LICENSE("GPL");
 
 static int smartconnect_acpi_probe(struct platform_device *pdev)
 {
-	acpi_handle handle = ACPI_HANDLE(&pdev->dev);
 	unsigned long long value;
+	acpi_handle handle;
 	acpi_status status;
 
+	handle = ACPI_HANDLE(&pdev->dev);
+	if (!handle)
+		return -ENODEV;
+
 	status = acpi_evaluate_integer(handle, "GAOS", NULL, &value);
 	if (ACPI_FAILURE(status))
 		return -EINVAL;