pinctrl: Fix potential memory leak in pinctrl_register_one_pin()

'pindesc' was not freed when returning from an error induced
exit path.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index dc5c126e398a..0f1ec9e8ff14 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -230,8 +230,10 @@ static int pinctrl_register_one_pin(struct pinctrl_dev *pctldev,
                 pindesc->name = name;
         } else {
                 pindesc->name = kasprintf(GFP_KERNEL, "PIN%u", number);
-                if (pindesc->name == NULL)
+                if (pindesc->name == NULL) {
+                        kfree(pindesc);
                         return -ENOMEM;
+                }
                 pindesc->dynamic_name = true;
         }