The programming pattern, referring after increasing reference count, is
supported by fw_node_get().

This commit simplify the programming pattern.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 drivers/firewire/core-card.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index d128c7a8bf5f..41902dcc10a0 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -306,8 +306,7 @@ static void bm_work(struct work_struct *work)
 
 	generation = card->generation;
 
-	root_node = card->root_node;
-	fw_node_get(root_node);
+	root_node = fw_node_get(card->root_node);
 	root_device = root_node->data;
 	root_device_is_running = root_device &&
 			atomic_read(&root_device->state) == FW_DEVICE_RUNNING;
-- 
2.48.1