media: amphion: cancel vpu before release instance

Revert "media: amphion: release m2m ctx when releasing vpu instance"
This reverts commit d91d7bc8.

Call v4l2_m2m_ctx_release() to cancel vpu,
afterwards release the vpu instance.

Fixes: d91d7bc8 ("media: amphion: release m2m ctx when releasing vpu instance")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/amphion/vpu_v4l2.c

@@ -681,10 +681,6 @@ static int vpu_v4l2_release(struct vpu_inst *inst)
 		inst->workqueue = NULL;
 	}
 
-	if (inst->fh.m2m_ctx) {
-		v4l2_m2m_ctx_release(inst->fh.m2m_ctx);
-		inst->fh.m2m_ctx = NULL;
-	}
 	v4l2_ctrl_handler_free(&inst->ctrl_handler);
 	mutex_destroy(&inst->lock);
 	v4l2_fh_del(&inst->fh);
@@ -767,6 +763,13 @@ int vpu_v4l2_close(struct file *file)
 
 	vpu_trace(vpu->dev, "tgid = %d, pid = %d, inst = %p\n", inst->tgid, inst->pid, inst);
 
+	vpu_inst_lock(inst);
+	if (inst->fh.m2m_ctx) {
+		v4l2_m2m_ctx_release(inst->fh.m2m_ctx);
+		inst->fh.m2m_ctx = NULL;
+	}
+	vpu_inst_unlock(inst);
+
 	call_void_vop(inst, release);
 	vpu_inst_unregister(inst);
 	vpu_inst_put(inst);