nvme: add a newline to the 'tls_key' sysfs attribute

Print a newline for easier userspace handling.

Signed-off-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>

drivers/nvme/host/sysfs.c

@@ -672,7 +672,7 @@ static ssize_t tls_key_show(struct device *dev,
 
 	if (!ctrl->tls_pskid)
 		return 0;
-	return sysfs_emit(buf, "%08x", ctrl->tls_pskid);
+	return sysfs_emit(buf, "%08x\n", ctrl->tls_pskid);
 }
 static DEVICE_ATTR_RO(tls_key);
 #endif