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.frSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/ti/k3-udma.c

@@ -2401,7 +2401,8 @@ static int bcdma_alloc_chan_resources(struct dma_chan *chan)
 			dev_err(ud->ddev.dev,
 				"Descriptor pool allocation failed\n");
 			uc->use_dma_pool = false;
-			return -ENOMEM;
+			ret = -ENOMEM;
+			goto err_res_free;
 		}
 
 		uc->use_dma_pool = true;