net: ethernet: renesas: rswitch: fix device_node refcount leak in rswitch_get_port_node()

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On an of_property_read_u32() failure, rswitch_get_port_node() set port
to NULL and jumped to the out label before releasing the reference the
for_each_available_child_of_node() iterator was holding on it. Once
port was overwritten with NULL, that reference could never be
released since out: only put "ports", the parent node.

Rework the function around for_each_available_child_of_node_scoped()
instead of adding a manual of_node_put(), so the iterator's reference
is dropped automatically on every exit path. Since port is the
function's return value, take an explicit reference with of_node_get()
on the match before breaking out of the loop.

Signed-off-by: Manush Prajwal <manushprajwal555@gmail.com>
Link: https://patch.msgid.link/6a882352.ee10049a.267d65.7a31@mx.google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Manush Prajwal 2026-08-21 15:37:14 +05:30 • committed by Jakub Kicinski

parent 01ba856c36

commit 5c07193ebe

1 changed files with 9 additions and 9 deletions

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drivers/net/ethernet/renesas/rswitch_main.c

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