memory: stm32_omm: Fix error handling in stm32_omm_disable_child()

Fix stm32_omm_toggle_child_clock() return value test, we should exit
only on non zero value.

Fixes: 8181d06 ("memory: Add STM32 Octo Memory Manager driver")
Signed-off-by: Patrice Chotard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Signed-off-by: Krzysztof Kozlowski <[email protected]>

Author: Patrice Chotard

drivers/memory/stm32_omm.c

@@ -164,7 +164,7 @@ static int stm32_omm_disable_child(struct device *dev)
 	u8 i;
 
 	ret = stm32_omm_toggle_child_clock(dev, true);
-	if (!ret)
+	if (ret)
 		return ret;
 
 	for (i = 0; i < omm->nb_child; i++) {