i3c: master: svc: Emit STOP asap in the IBI transaction

Queuing the IBI request does not need to be done earlier than emitting
the STOP. Emitting STOP immediately after receiving the IBI request can
complete the IBI transaction earlier and return the bus to idle.

Signed-off-by: Stanley Chu <yschu@nuvoton.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20250415051808.88091-3-yschu@nuvoton.com


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>