USB: ssb: use devm_kzalloc

Instead of manually handling the frees use devm. There was also a free
missing in the unregister call which is not needed with devm.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ssb-hcd.c

@@ -166,7 +166,8 @@ static int ssb_hcd_probe(struct ssb_device *dev,
 	if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
 		return -EOPNOTSUPP;
 
-	usb_dev = kzalloc(sizeof(struct ssb_hcd_device), GFP_KERNEL);
+	usb_dev = devm_kzalloc(dev->dev, sizeof(struct ssb_hcd_device),
+			       GFP_KERNEL);
 	if (!usb_dev)
 		return -ENOMEM;
 
@@ -181,10 +182,8 @@ static int ssb_hcd_probe(struct ssb_device *dev,
 	start = ssb_admatch_base(tmp);
 	len = (coreid == SSB_DEV_USB20_HOST) ? 0x800 : ssb_admatch_size(tmp);
 	usb_dev->ohci_dev = ssb_hcd_create_pdev(dev, true, start, len);
-	if (IS_ERR(usb_dev->ohci_dev)) {
-		err = PTR_ERR(usb_dev->ohci_dev);
-		goto err_free_usb_dev;
-	}
+	if (IS_ERR(usb_dev->ohci_dev))
+		return PTR_ERR(usb_dev->ohci_dev);
 
 	if (coreid == SSB_DEV_USB20_HOST) {
 		start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
@@ -200,8 +199,6 @@ static int ssb_hcd_probe(struct ssb_device *dev,
 
 err_unregister_ohci_dev:
 	platform_device_unregister(usb_dev->ohci_dev);
-err_free_usb_dev:
-	kfree(usb_dev);
 	return err;
 }