soundwire: intel_init: use devm_ allocation

Make error handling simpler with devm_ allocation.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200531182102.27840-5-yung-chuan.liao@linux.intel.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/soundwire/intel_init.c

@@ -42,9 +42,6 @@ static int sdw_intel_cleanup_pdev(struct sdw_intel_ctx *ctx)
 		link++;
 	}
 
-	kfree(ctx->links);
-	ctx->links = NULL;
-
 	return 0;
 }
 
@@ -96,14 +93,15 @@ static struct sdw_intel_ctx
 
 	dev_dbg(&adev->dev, "Creating %d SDW Link devices\n", count);
 
-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	ctx = devm_kzalloc(&adev->dev, sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return NULL;
 
 	ctx->count = count;
-	ctx->links = kcalloc(ctx->count, sizeof(*ctx->links), GFP_KERNEL);
+	ctx->links = devm_kcalloc(&adev->dev, ctx->count,
+				  sizeof(*ctx->links), GFP_KERNEL);
 	if (!ctx->links)
-		goto link_err;
+		return NULL;
 
 	link = ctx->links;
 
@@ -146,9 +144,8 @@ static struct sdw_intel_ctx
 	return ctx;
 
 pdev_err:
+	ctx->count = i;
 	sdw_intel_cleanup_pdev(ctx);
-link_err:
-	kfree(ctx);
 	return NULL;
 }
 
@@ -216,7 +213,6 @@ void *sdw_intel_init(acpi_handle *parent_handle, struct sdw_intel_res *res)
 void sdw_intel_exit(struct sdw_intel_ctx *ctx)
 {
 	sdw_intel_cleanup_pdev(ctx);
-	kfree(ctx);
 }
 EXPORT_SYMBOL(sdw_intel_exit);