usb: dwc2: pci: Handle error cleanup in probe

The probe function doesn't properly handle errors. Fix it so that it
properly handles cleanup.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc2/pci.c

@@ -114,7 +114,7 @@ static int dwc2_pci_probe(struct pci_dev *pci,
 	dwc2 = platform_device_alloc("dwc2", PLATFORM_DEVID_AUTO);
 	if (!dwc2) {
 		dev_err(dev, "couldn't allocate dwc2 device\n");
-		return -ENOMEM;
+		goto err;
 	}
 
 	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
@@ -131,7 +131,7 @@ static int dwc2_pci_probe(struct pci_dev *pci,
 	ret = platform_device_add_resources(dwc2, res, ARRAY_SIZE(res));
 	if (ret) {
 		dev_err(dev, "couldn't add resources to dwc2 device\n");
-		return ret;
+		goto err;
 	}
 
 	dwc2->dev.parent = dev;
@@ -142,7 +142,7 @@ static int dwc2_pci_probe(struct pci_dev *pci,
 
 	glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
 	if (!glue)
-		return -ENOMEM;
+		goto err;
 
 	ret = platform_device_add(dwc2);
 	if (ret) {