drm/i915: Use sizeof(*fb) not sizeof(struct ...) in get_initial_plane_config()

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 01dc80b..73b5923 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6586,7 +6586,7 @@
 	struct drm_framebuffer *fb;
 	struct intel_framebuffer *intel_fb;
 
-	intel_fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL);
+	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
 	if (!intel_fb) {
 		DRM_DEBUG_KMS("failed to alloc fb\n");
 		return;
@@ -7618,7 +7618,7 @@
 	struct drm_framebuffer *fb;
 	struct intel_framebuffer *intel_fb;
 
-	intel_fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL);
+	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
 	if (!intel_fb) {
 		DRM_DEBUG_KMS("failed to alloc fb\n");
 		return;
@@ -7714,7 +7714,7 @@
 	struct drm_framebuffer *fb;
 	struct intel_framebuffer *intel_fb;
 
-	intel_fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL);
+	intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
 	if (!intel_fb) {
 		DRM_DEBUG_KMS("failed to alloc fb\n");
 		return;