ASoC: msm: qdsp6v2: fix afe close failure at BE

In hwfree implementation, status_mask is cleared
which will avoid afe close in shutdown API. Instead
we need to clear hwfree_status to know hwfree is called.

Change-Id: I92d9142c437920b1b6e48c9b39cd6a2fb58872df
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>