dmaengine: ti: k3-udma: In case of error in filter_fn, reset the direction

Fixes possible issue when after a failed slave channel request the same
channel is reused for memcpy.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>

drivers/dma/ti/k3-udma.c

@@ -2957,11 +2957,13 @@ static bool udma_dma_filter_fn(struct dma_chan *chan, void *param)
 	slave_node = of_find_node_by_phandle(args[0]);
 	if (!slave_node) {
 		dev_err(ud->dev, "Slave node is missing\n");
+		uc->dir = DMA_MEM_TO_MEM;
 		return false;
 	}
 
 	if (of_property_read_u32(slave_node, "ti,psil-base", &val)) {
 		dev_err(ud->dev, "ti,psil-base is missing\n");
+		uc->dir = DMA_MEM_TO_MEM;
 		return false;
 	}
 
@@ -2972,6 +2974,7 @@ static bool udma_dma_filter_fn(struct dma_chan *chan, void *param)
 	chconf_node = of_find_node_by_name(slave_node, prop);
 	if (!chconf_node) {
 		dev_err(ud->dev, "Channel configuration node is missing\n");
+		uc->dir = DMA_MEM_TO_MEM;
 		uc->remote_thread_id = -1;
 		return false;
 	}