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pinctrl: stm32: stm32: Add of_node_put() before return 

Each iteration of for_each_child_of_node and
for_each_available_child_of_node puts the previous node, but in
the case of a return from the middle of the loop, there is no put, thus
causing a memory leak. Hence add an of_node_put before the return in
two places.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190808075457.16109-1-nishkadg.linux@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Nishka Dasgupta 2019-08-08 13:24:56 +05:30 committed by Linus Walleij
parent 21b2920fb5
commit 474137c911
1 changed files with 4 additions and 1 deletions
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5
drivers/pinctrl/stm32/pinctrl-stm32.c
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@ -615,6 +615,7 @@ static int stm32_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
&reserved_maps, num_maps);
if (ret < 0) {
pinctrl_utils_free_map(pctldev, *map, *num_maps);
of_node_put(np);
return ret;
}
}
@ -1468,8 +1469,10 @@ int stm32_pctl_probe(struct platform_device *pdev)
for_each_available_child_of_node(np, child) {
if (of_property_read_bool(child, "gpio-controller")) {
ret = stm32_gpiolib_register_bank(pctl, child);
if (ret)
if (ret) {
of_node_put(child);
return ret;
}
pctl->nbanks++;
}