ibmvnic: Call napi_disable instead of napi_enable in failure path

The failure path in ibmvnic_open() mistakenly makes a second call
to napi_enable instead of calling napi_disable. This can result
in a BUG_ON for any queues that were enabled in the previous call
to napi_enable.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/ibmvnic.c

@@ -506,7 +506,7 @@ rx_pool_alloc_failed:
 	adapter->rx_pool = NULL;
 rx_pool_arr_alloc_failed:
 	for (i = 0; i < adapter->req_rx_queues; i++)
-		napi_enable(&adapter->napi[i]);
+		napi_disable(&adapter->napi[i]);
 alloc_napi_failed:
 	return -ENOMEM;
 }