[PATCH v1] clk: at91: keep securam node alive while mapping it

[Yuho Choi]

pmc_register_ops() gets an owned reference to the
"atmel,sama5d2-securam" node with of_find_compatible_node().  The
success path dropped that reference before passing the node to
of_iomap(), leaving of_iomap() to consume a node pointer after the caller
had released its reference.

Move of_node_put() after of_iomap() so the node remains referenced for
the mapping operation.  The unavailable-node error path already releases
the reference.

Fixes: 4d21be864092 ("clk: at91: pmc: execute suspend/resume only for backup mode")
Signed-off-by: Yuho Choi <dbgh9129@xxxxxxxxx>
---
 drivers/clk/at91/pmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index b618a5e00b00..03a6c31d6aa8 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -180,9 +180,9 @@ static int __init pmc_register_ops(void)
 		of_node_put(np);
 		return -ENODEV;
 	}
-	of_node_put(np);
 
 	at91_pmc_backup_suspend = of_iomap(np, 0);
+	of_node_put(np);
 	if (!at91_pmc_backup_suspend) {
 		pr_warn("%s(): unable to map securam\n", __func__);
 		return -ENOMEM;
-- 
2.43.0