tty/vt: consolemap: make con_get_unimap() more readable

tty/vt: consolemap: make con_get_unimap() more readable

The indentation is completely broken in con_get_unimap(). Reorder the
code using "if (!cond) continue;"s so that the code makes sense. Switch
also the "p" assignment and add a short path using goto. This makes the
code readable again.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220607104946.18710-14-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>