dmaengine: ti: k3-udma-private: Fix refcount leak bug in of_xudma_dev_get()

dmaengine: ti: k3-udma-private: Fix refcount leak bug in of_xudma_dev_get()

We should call of_node_put() for the reference returned by
of_parse_phandle() in fail path or when it is not used anymore.
Here we only need to move the of_node_put() before the check.

Fixes: d3356a9eef77 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine users")
Signed-off-by: Liang He <windhl@126.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20220720073234.1255474-1-windhl@126.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>