w1: remove redundant initialization to variable result

The variable result is being initialized with a value that is never
read, it is being updated later on. The assignment is redundant and
can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210721103451.43026-1-colin.king@canonical.com


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>