drivers/mediatek/afe: Set initial state on DMA objects

At the start of probe(), the expectation is that component objects go
to COMP_STATE_INIT.  This was being skipped.  That used to be benign,
I believe because the struct was allocated via a path that set it
already.  But now it fails with the Zephyr integration.

Signed-off-by: Andy Ross <andyross@google.com>

src/drivers/mediatek/afe/afe-memif.c

@@ -370,6 +370,7 @@ static int memif_probe(struct dma *dma)
 		dma->chan[channel].dma = dma;
 		/* TODO need divide to UL and DL for different index */
 		dma->chan[channel].index = channel;
+		dma->chan[channel].status = COMP_STATE_INIT;
 
 		memif = rzalloc(SOF_MEM_ZONE_SYS_RUNTIME, 0, SOF_MEM_CAPS_RAM,
 				sizeof(struct afe_memif_dma));