memory: pl353-smc: Rename goto labels

A goto label is better named

        do_something:

than

        out_something_to_do:

Use the former wording and really describe what the jump involves.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20210610082040.2075611-12-miquel.raynal@bootlin.com


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>