[openwrt/openwrt] airoha: backport fix for Airoha offload support with airoha_hw_init fail

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/c3c75d0e685b90fdcb9f1cf79a6e2c6949cce9ac

commit c3c75d0e685b90fdcb9f1cf79a6e2c6949cce9ac
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Fri Oct 24 12:16:11 2025 +0200

    airoha: backport fix for Airoha offload support with airoha_hw_init fail
    
    Backport a patch fixing a kernel panic on airoha_hw_init fail. This
    should better handle scenario with NPU load Probe deferring.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 ...Fix-an-error-handling-path-in-airoha_prob.patch | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/target/linux/airoha/patches-6.12/104-v6.16-net-airoha-Fix-an-error-handling-path-in-airoha_prob.patch b/target/linux/airoha/patches-6.12/104-v6.16-net-airoha-Fix-an-error-handling-path-in-airoha_prob.patch
new file mode 100644
index 0000000000..58e48cb8d0
--- /dev/null
+++ b/target/linux/airoha/patches-6.12/104-v6.16-net-airoha-Fix-an-error-handling-path-in-airoha_prob.patch
@@ -0,0 +1,29 @@
+From 3ef07434c7dbfba302df477bb6c70e082965f232 Mon Sep 17 00:00:00 2001
+From: Christophe JAILLET <christophe.jaillet at wanadoo.fr>
+Date: Sat, 5 Jul 2025 10:34:32 +0200
+Subject: [PATCH] net: airoha: Fix an error handling path in airoha_probe()
+
+If an error occurs after a successful airoha_hw_init() call,
+airoha_ppe_deinit() needs to be called as already done in the remove
+function.
+
+Fixes: 00a7678310fe ("net: airoha: Introduce flowtable offload support")
+Signed-off-by: Christophe JAILLET <christophe.jaillet at wanadoo.fr>
+Reviewed-by: Simon Horman <horms at kernel.org>
+Acked-by: Lorenzo Bianconi <lorenzo at kernel.org>
+Link: https://patch.msgid.link/1c940851b4fa3c3ed2a142910c821493a136f121.1746715755.git.christophe.jaillet@wanadoo.fr
+Signed-off-by: Jakub Kicinski <kuba at kernel.org>
+---
+ drivers/net/ethernet/airoha/airoha_eth.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/net/ethernet/airoha/airoha_eth.c
++++ b/drivers/net/ethernet/airoha/airoha_eth.c
+@@ -3044,6 +3044,7 @@ static int airoha_probe(struct platform_
+ error_napi_stop:
+ 	for (i = 0; i < ARRAY_SIZE(eth->qdma); i++)
+ 		airoha_qdma_stop_napi(&eth->qdma[i]);
++	airoha_ppe_deinit(eth);
+ error_hw_cleanup:
+ 	for (i = 0; i < ARRAY_SIZE(eth->qdma); i++)
+ 		airoha_hw_cleanup(&eth->qdma[i]);