drm/amdgpu: Delete an unnecessary check before drm_gem_object_unreference_unlocked()

The drm_gem_object_unreference_unlocked() function tests whether
its argument is NULL and then returns immediately.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index dd965f2..76f9602 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -516,9 +516,7 @@ static void amdgpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
 {
        struct amdgpu_framebuffer *amdgpu_fb = to_amdgpu_framebuffer(fb);
 
-       if (amdgpu_fb->obj) {
-               drm_gem_object_unreference_unlocked(amdgpu_fb->obj);
-       }
+       drm_gem_object_unreference_unlocked(amdgpu_fb->obj);
        drm_framebuffer_cleanup(fb);
        kfree(amdgpu_fb);
 }