[media] m2m-deinterlace: Convert to devm* API

Replace resource handling in the driver with managed device resource.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/m2m-deinterlace.c

@@ -1002,7 +1002,7 @@ static int deinterlace_probe(struct platform_device *pdev)
 	dma_cap_mask_t mask;
 	int ret = 0;
 
-	pcdev = kzalloc(sizeof *pcdev, GFP_KERNEL);
+	pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL);
 	if (!pcdev)
 		return -ENOMEM;
 
@@ -1012,7 +1012,7 @@ static int deinterlace_probe(struct platform_device *pdev)
 	dma_cap_set(DMA_INTERLEAVE, mask);
 	pcdev->dma_chan = dma_request_channel(mask, NULL, pcdev);
 	if (!pcdev->dma_chan)
-		goto free_dev;
+		return -ENODEV;
 
 	if (!dma_has_cap(DMA_INTERLEAVE, pcdev->dma_chan->device->cap_mask)) {
 		v4l2_err(&pcdev->v4l2_dev, "DMA does not support INTERLEAVE\n");
@@ -1078,8 +1078,6 @@ static int deinterlace_probe(struct platform_device *pdev)
 	v4l2_device_unregister(&pcdev->v4l2_dev);
 rel_dma:
 	dma_release_channel(pcdev->dma_chan);
-free_dev:
-	kfree(pcdev);
 
 	return ret;
 }
@@ -1094,7 +1092,6 @@ static int deinterlace_remove(struct platform_device *pdev)
 	v4l2_device_unregister(&pcdev->v4l2_dev);
 	vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
 	dma_release_channel(pcdev->dma_chan);
-	kfree(pcdev);
 
 	return 0;
 }