nvme-fabrics: initialize default host->id in nvmf_host_default()

The field was uninitialized before use.
Signed-off-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

drivers/nvme/host/fabrics.c

@@ -74,6 +74,7 @@ static struct nvmf_host *nvmf_host_default(void)
 		return NULL;
 
 	kref_init(&host->ref);
+	uuid_gen(&host->id);
 	snprintf(host->nqn, NVMF_NQN_SIZE,
 		"nqn.2014-08.org.nvmexpress:uuid:%pUb", &host->id);