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The current error check for device_find_first_child is not working as expected, the documentation for device_find_first_child mention: @devp: Returns first child device, or NULL if none Return: 0 Change to return early when there is no child node to avoid any possible null pointer dereference. Signed-off-by: Jonas Karlman <jonas@kwiboo.se> Reviewed-by: Marek Vasut <marex@denx.de> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>