scripts: get_abi.pl: call get_leave() a little late

scripts: get_abi.pl: call get_leave() a little late

The $what conversions need to replace some characters to avoid
breaking regex expressions found on some What:.

only after replacing them back, the script should get the
$leave devnode.

Fixes: ca8e055c2215 ("scripts: get_abi.pl: add a graph to speedup the undefined algorithm")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/a21631f8a884f50a962beafdd800f27891348d95.1632411447.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>