gpio: stm32_gpio: do not mix error code types

Change-Id: I84f8a99be2dcdf7c51fbecdb324df8e2f32cc855
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>
1 file changed