[PATCH] nvme: apple: tolerate missing power-domain arrays during cleanup

[Slavin Liu]

pd_count is set before either backing array is allocated. A failed
array allocation can therefore reach cleanup with a positive count but
a NULL array. Check each array before indexing it.

Detected by static analysis and reviewed with AI-assisted source auditing.

Fixes: eefa72a15ea0 ("apple-nvme: Release power domains when probe fails")
Assisted-by: LLM
Signed-off-by: Slavin Liu <bolin.liu at seu.edu.cn>
---
 drivers/nvme/host/apple.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/apple.c b/drivers/nvme/host/apple.c
index c63e28c75766..b7835e736d82 100644
--- a/drivers/nvme/host/apple.c
+++ b/drivers/nvme/host/apple.c
@@ -1398,9 +1398,9 @@ static void apple_nvme_detach_genpd(struct apple_nvme *anv)
 		return;
 
 	for (i = anv->pd_count - 1; i >= 0; i--) {
-		if (anv->pd_link[i])
+		if (anv->pd_link && anv->pd_link[i])
 			device_link_del(anv->pd_link[i]);
-		if (!IS_ERR_OR_NULL(anv->pd_dev[i]))
+		if (anv->pd_dev && !IS_ERR_OR_NULL(anv->pd_dev[i]))
 			dev_pm_domain_detach(anv->pd_dev[i], true);
 	}
 }