[patch] thinkpad_acpi: silence an unintialized variable warning

[Dan Carpenter]

If fan_get_status() fails then "s" isn't initialized.  I've tweaked the
error handling a bit to silence this warning.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/platform/x86/thinkpad_acpi.c 
b/drivers/platform/x86/thinkpad_acpi.c
index e305ab5..9255ff3 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -7972,10 +7972,12 @@ static int fan_get_status_safe(u8 *status)
                fan_update_desired_level(s);
        mutex_unlock(&fan_mutex);
 
+       if (rc)
+               return rc;
        if (status)
                *status = s;
 
-       return rc;
+       return 0;
 }
 
 static int fan_get_speed(unsigned int *speed)