drm/amdgpu: Move the dumping log out of for loop

log message "Dumping IP State Completed" needs to
be logged only once when state dumping is complete.

Hence moving it out of the for loop.

Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Acked-by: Trigger Huang <Trigger.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>