pinctrl: tegra: Fix off by one in tegra_pinctrl_get_group()

commit 5a062c3 upstream.

This should be >= pmx->soc->ngroups instead of > to avoid an out of
bounds access.  The pmx->soc->groups[] array is allocated in
tegra_pinctrl_probe().

Fixes: c12bfa0 ("pinctrl-tegra: Restore SFSEL bit when freeing pins")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Kunwu Chan <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Dan Carpenter

drivers/pinctrl/tegra/pinctrl-tegra.c

@@ -305,7 +305,7 @@ static const struct tegra_pingroup *tegra_pinctrl_get_group(struct pinctrl_dev *
 {
 	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
 
-	if (group_index < 0 || group_index > pmx->soc->ngroups)
+	if (group_index < 0 || group_index >= pmx->soc->ngroups)
 		return NULL;
 
 	return &pmx->soc->groups[group_index];