ibmvnic: Fix statistics buffers memory leak

Move initialization of statistics buffers from ibmvnic_init function
into ibmvnic_probe. In the current state, ibmvnic_init will be called
again during a device reset, resulting in the allocation of new
buffers without freeing the old ones.
Signed-off-by: NThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/ibmvnic.c

@@ -4586,14 +4586,6 @@ static int ibmvnic_init(struct ibmvnic_adapter *adapter)
 		release_crq_queue(adapter);
 	}
 
-	rc = init_stats_buffers(adapter);
-	if (rc)
-		return rc;
-
-	rc = init_stats_token(adapter);
-	if (rc)
-		return rc;
-
 	return rc;
 }
 
@@ -4662,13 +4654,21 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
 			goto ibmvnic_init_fail;
 	} while (rc == EAGAIN);
 
+	rc = init_stats_buffers(adapter);
+	if (rc)
+		goto ibmvnic_init_fail;
+
+	rc = init_stats_token(adapter);
+	if (rc)
+		goto ibmvnic_stats_fail;
+
 	netdev->mtu = adapter->req_mtu - ETH_HLEN;
 	netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
 	netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
 
 	rc = device_create_file(&dev->dev, &dev_attr_failover);
 	if (rc)
-		goto ibmvnic_init_fail;
+		goto ibmvnic_dev_file_err;
 
 	netif_carrier_off(netdev);
 	rc = register_netdev(netdev);
@@ -4687,6 +4687,12 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
 ibmvnic_register_fail:
 	device_remove_file(&dev->dev, &dev_attr_failover);
 
+ibmvnic_dev_file_err:
+	release_stats_token(adapter);
+
+ibmvnic_stats_fail:
+	release_stats_buffers(adapter);
+
 ibmvnic_init_fail:
 	release_sub_crqs(adapter, 1);
 	release_crq_queue(adapter);