vdpa: ifcvf: Do proper cleanup if IFCVF init fails

ifcvf_mgmt_dev leaks memory if it is not freed before
returning. Call is made to correct return statement
so memory does not leak. ifcvf_init_hw does not take
care of this so it is needed to do it here.
Signed-off-by: Tanmay Bhushan <007047221b@gmail.com>
Message-Id: <772e9fe133f21fa78fb98a2ebe8969efbbd58e3c.camel@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Zhu Lingshan <lingshan.zhu@intel.com>

drivers/vdpa/ifcvf/ifcvf_main.c

@@ -849,7 +849,7 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	ret = ifcvf_init_hw(vf, pdev);
 	if (ret) {
 		IFCVF_ERR(pdev, "Failed to init IFCVF hw\n");
-		return ret;
+		goto err;
 	}
 
 	for (i = 0; i < vf->nr_vring; i++)