ASoC: rt5640: Only cancel jack-detect work on suspend if active

ASoC: rt5640: Only cancel jack-detect work on suspend if active

If jack-detection is not used; or has already been disabled then
there is no need to call rt5640_cancel_work().

Move the rt5640_cancel_work() inside the "if (rt5640->jack) {}" block,
grouping it together with the disabling of the IRQ which queues the work
in the first place.

This also makes suspend() symetrical with resume() which re-queues the work
in an "if (rt5640->jack) {}" block.

Cc: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230912113245.320159-7-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>