linux-phytec-ti

dmaengine: ti: k3-udma: Fix kernel crash when _prep* callback fails

Since the descriptor is not yet prepared, the vd->tx.chan is not yet valid
and when trying to free up the memory we will hit NULL pointer dereference.

Change the udma_free_hwdesc() parameters to fix this.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>