driver core: bus: Add simple error handling for buses_init()

Add simple error handling for buses_init() since it is easy to do.

Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20240727-buses_init-v1-1-e863295a2c0e@quicinc.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>