[bug report] asus-wireless: Toggle airplane mode LED

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

Hello João Paulo Rechi Vita,

The patch 2c1a49c96123: "asus-wireless: Toggle airplane mode LED"
from Jun 13, 2016, leads to the following static checker warning:

	drivers/platform/x86/asus-wireless.c:54 asus_wireless_method()
	error: uninitialized symbol 'ret'.

drivers/platform/x86/asus-wireless.c
    33  static u64 asus_wireless_method(acpi_handle handle, const char *method,
    34                                  int param)
    35  {
    36          struct acpi_object_list p;
    37          union acpi_object obj;
    38          acpi_status s;
    39          u64 ret;
    40  
    41          acpi_handle_debug(handle, "Evaluating method %s, parameter %#x\n",
    42                            method, param);
    43          obj.type = ACPI_TYPE_INTEGER;
    44          obj.integer.value = param;
    45          p.count = 1;
    46          p.pointer = &obj;
    47  
    48          s = acpi_evaluate_integer(handle, (acpi_string) method, &p, &ret);

"ret" isn't necessarily initialized on a couple error paths through this
function.

    49          if (ACPI_FAILURE(s))
    50                  acpi_handle_err(handle,
    51                                  "Failed to eval method %s, param %#x (%d)\n",
    52                                  method, param, s);
    53          acpi_handle_debug(handle, "%s returned %#x\n", method, (uint) ret);
    54          return ret;
    55  }

regards,
dan carpenter