dmaengine: ti: k3-udma: Fix a resource leak in an error handling path

In 'dma_pool_create()', we return -ENOMEM, but don't release the resources
already allocated, as in all the other error handling paths.

Go to 'err_res_free' instead of returning directly.

Fixes: 01779473

 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20210124070923.724479-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>