xen/netback: fix error path of xenvif_connect_data()

xenvif_connect_data() calls module_put() in case of error. This is
wrong as there is no related module_get().

Remove the superfluous module_put().

Fixes: 279f438 ("xen-netback: Don't destroy the netdev until the vif is shut down")
Cc: <[email protected]> # 3.12
Signed-off-by: Juergen Gross <[email protected]>
Reviewed-by: Paul Durrant <[email protected]>
Reviewed-by: Wei Liu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: jgross1

drivers/net/xen-netback/interface.c

@@ -719,7 +719,6 @@ int xenvif_connect_data(struct xenvif_queue *queue,
 	xenvif_unmap_frontend_data_rings(queue);
 	netif_napi_del(&queue->napi);
 err:
-	module_put(THIS_MODULE);
 	return err;
 }