soc: qcom: hab: return an error for some issue during closing a hab socket

habmm_socket_close should return some relevant error code back to
its caller. Then, its caller can handle it properly.

Change-Id: I04d2fb39644514d59aa94d0dfab7efd1e279ce6a
Signed-off-by: Yong Ding <yongding@codeaurora.org>