spi: Set ctlr->cur_msg also in the sync transfer case

Some drivers rely on this to point to the currently processed message, so
set this here also.
Signed-off-by: David Jander <david@protonic.nl>
Link: https://lore.kernel.org/r/20220621061234.3626638-10-david@protonic.nlSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi.c

@@ -3957,6 +3957,7 @@ static void __spi_transfer_message_noqueue(struct spi_controller *ctlr, struct s
 
 	was_busy = ctlr->busy;
 
+	ctlr->cur_msg = msg;
 	ret = __spi_pump_transfer_message(ctlr, msg, was_busy);
 	if (ret)
 		goto out;