dmaengine: ti: k3-udma: Use proper return code in alloc_chan_resources

In udma_alloc_chan_resources() if the channel is not willing to stop then
the function should return with error code.

Signed-off-by: Peter Ujfalusi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Peter Ujfalusi

drivers/dma/ti/k3-udma.c

@@ -1850,6 +1850,7 @@ static int udma_alloc_chan_resources(struct dma_chan *chan)
 		udma_stop(uc);
 		if (udma_is_chan_running(uc)) {
 			dev_err(ud->dev, "chan%d: won't stop!\n", uc->id);
+			ret = -EBUSY;
 			goto err_res_free;
 		}
 	}