Fix the following coccicheck warning:

drivers/dma/qcom/hidma.c:553:1-17: WARNING: Assignment of 0/1 to bool
variable
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Acked By: Sinan Kaya <okaya@kernel.org>
Link: https://lore.kernel.org/r/20200504113406.41530-1-yanaijie@huawei.comSigned-off-by: Vinod Koul <vkoul@kernel.org>