UPSTREAM: staging/gdm72xx: Remove duplicated code in gdm_qos.c

UPSTREAM: staging/gdm72xx: Remove duplicated code in gdm_qos.c

The first branch of the if statement is ended with a return thus there
is no need for an else if, and thus we can move the duplicated code to
the top and use it for the other two branches.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit d38529100d0f2e844df5f06d67dae8dd32086ec1)

Change-Id: I9ad27e507f0f66a821dd9c2327dc67cc69bc8a10
Signed-off-by: Ben Chan <benchan@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49426
Reviewed-by: Paul Stewart <pstew@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>