drm/i915/skl: Reduce the indentation level in skl_write_wm_values()

We can reduce the indentation level by continuing early.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDamien Lespiau <damien.lespiau@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_pm.c

@@ -3485,9 +3485,10 @@ static void skl_write_wm_values(struct drm_i915_private *dev_priv,
 		int i, level, max_level = ilk_wm_max_level(dev);
 		enum pipe pipe = crtc->pipe;
 
-		if (new->dirty[pipe]) {
-			I915_WRITE(PIPE_WM_LINETIME(pipe),
-					new->wm_linetime[pipe]);
+		if (!new->dirty[pipe])
+			continue;
+
+		I915_WRITE(PIPE_WM_LINETIME(pipe), new->wm_linetime[pipe]);
 
 		for (level = 0; level <= max_level; level++) {
 			for (i = 0; i < intel_num_planes(crtc); i++)
@@ -3509,7 +3510,6 @@ static void skl_write_wm_values(struct drm_i915_private *dev_priv,
 		skl_ddb_entry_write(dev_priv, CUR_BUF_CFG(pipe),
 				    &new->ddb.cursor[pipe]);
 	}
-	}
 }
 
 static bool skl_update_pipe_wm(struct drm_crtc *crtc,