kernel-yocto: always checkout machine branch when existing validate_branches
The validate_branches routine is responsible for ensuring that the specified
SRCREV exists, and that the tree has been prepared for eventual patching
starting directly from that SRCREV.
On exit, the routine checks out the specified machine branch and the
preparation is complete .. except if a KMETA branch isn't used, we exit
early since the branch can't be validated.
To make the exit condition consistent for all cases, we can move the
KMETA validation inside a conditional and allow the same exit path for
both cases.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>
