drm/nouveau/disp/g94-: stop listening for dp (sst) retrain irq when disabling link

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c

@@ -213,6 +213,7 @@ gf119_disp_intr_unk2_0(struct nv50_disp *disp, int head)
 				.execute = 1,
 			};
 
+			nvkm_notify_put(&outpdp->irq);
 			nvbios_exec(&init);
 			atomic_set(&outpdp->lt.done, 0);
 		}

drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c

@@ -590,6 +590,7 @@ nv50_disp_intr_unk20_0(struct nv50_disp *disp, int head)
 			.execute = 1,
 		};
 
+		nvkm_notify_put(&outpdp->irq);
 		nvbios_exec(&init);
 		atomic_set(&outpdp->lt.done, 0);
 	}