usb: musb: ux500: use devm_ functions

This patch introduces the use of managed interfaces for clk_get and
kzalloc and removes the corresponding free function calls in the probe
and remove functions.
Signed-off-by: NHimangi Saraogi <himangi774@gmail.com>
Acked-by: NJulia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/musb/ux500.c

@@ -246,7 +246,7 @@ static int ux500_probe(struct platform_device *pdev)
 		}
 	}
 
-	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
 	if (!glue) {
 		dev_err(&pdev->dev, "failed to allocate glue context\n");
 		goto err0;
@@ -255,20 +255,20 @@ static int ux500_probe(struct platform_device *pdev)
 	musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
 	if (!musb) {
 		dev_err(&pdev->dev, "failed to allocate musb device\n");
-		goto err1;
+		goto err0;
 	}
 
-	clk = clk_get(&pdev->dev, NULL);
+	clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
 		ret = PTR_ERR(clk);
-		goto err3;
+		goto err1;
 	}
 
 	ret = clk_prepare_enable(clk);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to enable clock\n");
-		goto err4;
+		goto err1;
 	}
 
 	musb->dev.parent		= &pdev->dev;
@@ -302,34 +302,28 @@ static int ux500_probe(struct platform_device *pdev)
 			ARRAY_SIZE(musb_resources));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add resources\n");
-		goto err5;
+		goto err2;
 	}
 
 	ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add platform_data\n");
-		goto err5;
+		goto err2;
 	}
 
 	ret = platform_device_add(musb);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register musb device\n");
-		goto err5;
+		goto err2;
 	}
 
 	return 0;
 
-err5:
+err2:
 	clk_disable_unprepare(clk);
 
-err4:
-	clk_put(clk);
-
-err3:
-	platform_device_put(musb);
-
 err1:
-	kfree(glue);
+	platform_device_put(musb);
 
 err0:
 	return ret;
@@ -341,8 +335,6 @@ static int ux500_remove(struct platform_device *pdev)
 
 	platform_device_unregister(glue->musb);
 	clk_disable_unprepare(glue->clk);
-	clk_put(glue->clk);
-	kfree(glue);
 
 	return 0;
 }