drivers: arch_topology: Refactor do-while loops

Refactor do-while loops to move break condition within the loop's scope.
This modification is in preparation to move the declaration of the
device_node directly within the loop and take advantage of the automatic
cleanup feature provided by the __free(device_node) attribute.

Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Vincenzo Mezzela <vincenzo.mezzela@gmail.com>
Link: https://lore.kernel.org/r/20240607163350.392971-2-vincenzo.mezzela@gmail.com


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