dmaengine: ti: Add missing put_device in ti_dra7_xbar_route_allocate

of_find_device_by_node() takes reference, we should use put_device()
to release it when not need anymore.

Fixes: a074ae38f859 ("dmaengine: Add driver for TI DMA crossbar on DRA7x")
Signed-off-by: Miaoqian Lin <[e-mail]>
Acked-by: Peter Ujfalusi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/ti/dma-crossbar.c

···
 	if (dma_spec->args[0] >= xbar->xbar_requests) {
 		dev_err(&pdev->dev, "Invalid XBAR request number: %d\n",
 			dma_spec->args[0]);
+		put_device(&pdev->dev);
 		return ERR_PTR(-EINVAL);
 	}
 
···
 	dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", 0);
 	if (!dma_spec->np) {
 		dev_err(&pdev->dev, "Can't get DMA master\n");
+		put_device(&pdev->dev);
 		return ERR_PTR(-EINVAL);
 	}
 
 	map = kzalloc(sizeof(*map), GFP_KERNEL);
 	if (!map) {
 		of_node_put(dma_spec->np);
+		put_device(&pdev->dev);
 		return ERR_PTR(-ENOMEM);
 	}
 
···
 		dev_err(&pdev->dev, "Run out of free DMA requests\n");
 		kfree(map);
 		of_node_put(dma_spec->np);
+		put_device(&pdev->dev);
 		return ERR_PTR(-ENOMEM);
 	}
 	set_bit(map->xbar_out, xbar->dma_inuse);