drm/mst: Some style improvements in drm_dp_mst_topology_mgr_set_mst()

Removing this lose code block and removing unnecessary bracket.

Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200117015837.402239-2-jose.souza@intel.com

drivers/gpu/drm/drm_dp_mst_topology.c

@@ -3454,6 +3454,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
 	mgr->mst_state = mst_state;
 	/* set the device into MST mode */
 	if (mst_state) {
+		struct drm_dp_payload reset_pay;
+
 		WARN_ON(mgr->mst_primary);
 
 		/* get dpcd info */
@@ -3484,16 +3486,12 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
 
 		ret = drm_dp_dpcd_writeb(mgr->aux, DP_MSTM_CTRL,
 							 DP_MST_EN | DP_UP_REQ_EN | DP_UPSTREAM_IS_SRC);
-		if (ret < 0) {
+		if (ret < 0)
 			goto out_unlock;
-		}
 
-		{
-			struct drm_dp_payload reset_pay;
 		reset_pay.start_slot = 0;
 		reset_pay.num_slots = 0x3f;
 		drm_dp_dpcd_write_payload(mgr, 0, &reset_pay);
-		}
 
 		queue_work(system_long_wq, &mgr->work);