drm/amdkfd: Fix MEC pipe interrupt enablement

for_each_inst modifies xcc_mask and therefore the loop doesn't
initialize properly interrupts on all pipes. Keep looping through xcc as
the outer loop to fix this issue.

Fixes: c4050ff1 ("drm/amdkfd: Use xcc mask for identifying xcc")
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

@@ -1274,13 +1274,14 @@ static void init_interrupts(struct device_queue_manager *dqm)
 	uint32_t xcc_mask = dqm->dev->xcc_mask;
 	unsigned int i, xcc_id;
 
+	for_each_inst(xcc_id, xcc_mask) {
 		for (i = 0 ; i < get_pipes_per_mec(dqm) ; i++) {
 			if (is_pipe_enabled(dqm, 0, i)) {
-			for_each_inst(xcc_id, xcc_mask)
 				dqm->dev->kfd2kgd->init_interrupts(
 					dqm->dev->adev, i, xcc_id);
 			}
 		}
+	}
 }
 
 static int initialize_nocpsch(struct device_queue_manager *dqm)