* Return directly after a call of the function "copy_from_user" failed
  in a case block.

* Delete the jump label "out" which became unnecessary with
  this refactoring.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>