[ Upstream commitbde82ee391] If KMEM_CACHE or maple_alloc_dev failed, the maple_bus_init() will return 0 rather than error, because the retval is not changed after KMEM_CACHE or maple_alloc_dev failed. Fixes:17be2d2b1c("sh: Add maple bus support for the SEGA Dreamcast.") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Lu Wei <luwei32@huawei.com> Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Rich Felker <dalias@libc.org> Signed-off-by: Sasha Levin <sashal@kernel.org>