ACPI/PCI: Fix return value of acpi_cuery_osc()

If acpi_query_osc() returns other than AE_OK, __pci_osc_support_set()
stops scanning ACPI objects to evaluate _OSC. This prevents subsequent
_OSCs from being evaluated if some of root bridge doesn't have _OSC, for
example. So acpi_query_osc() should return always AE_OK to evaluate all
_OSC.

Signed-off-by: Kenji Kaneshige <[e-mail]>
Signed-off-by: Taku Izumi <[e-mail]>
Signed-off-by: Jesse Barnes <[e-mail]>

drivers/pci/pci-acpi.c

···
 
 	status = acpi_get_handle(handle, "_OSC", &tmp);
 	if (ACPI_FAILURE(status))
-		return status;
+		return AE_OK;
 
 	mutex_lock(&pci_acpi_lock);
 	osc_data = acpi_get_osc_data(handle);
 	if (!osc_data) {
 		printk(KERN_ERR "acpi osc data array is full\n");
-		status = AE_ERROR;
 		goto out;
 	}
 
-	status = __acpi_query_osc(flags, osc_data, &dummy);
+	__acpi_query_osc(flags, osc_data, &dummy);
 out:
 	mutex_unlock(&pci_acpi_lock);
-	return status;
+	return AE_OK;
 }
 
 /**