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dmaengine: ti: dma-crossbar: fix device leak on dra7x route allocation

Make sure to drop the reference taken when looking up the crossbar
platform device during dra7x route allocation.

Note that commit 615a4bfc426e ("dmaengine: ti: Add missing put_device in
ti_dra7_xbar_route_allocate") fixed the leak in the error paths but the
reference is still leaking on successful allocation.

Fixes: a074ae38f859 ("dmaengine: Add driver for TI DMA crossbar on DRA7x")
Fixes: 615a4bfc426e ("dmaengine: ti: Add missing put_device in ti_dra7_xbar_route_allocate")
Cc: stable@vger.kernel.org # 4.2: 615a4bfc426e
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20251117161258.10679-14-johan@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

authored by

Johan Hovold and committed by
Vinod Koul dc7e44db 10bf494f

+2
+2
drivers/dma/ti/dma-crossbar.c
··· 288 288 289 289 ti_dra7_xbar_write(xbar->iomem, map->xbar_out, map->xbar_in); 290 290 291 + put_device(&pdev->dev); 292 + 291 293 return map; 292 294 } 293 295