staging: wlan-ng: remove redundant initialization of variable txresult

The variable txresult is being initialized with a value that is
never read and it is being updated later with a new value. The
initialization is redundant and can be removed.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20210422112046.245144-1-colin.king@canonical.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>