drm/bochs: fix ptr_ret.cocci warnings

drivers/gpu/drm/bochs/bochs_mm.c:19:1-3: WARNING: PTR_ERR_OR_ZERO can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Fixes: b3a25b9af80d ("drm/bochs: Convert bochs driver to VRAM MM")
CC: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: kbuild test robot <lkp@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190520122314.GA155389@lkp-kbuild22
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
index cfb497140f6f1f15048ae298152beec65c331fbf..543499c07139e462dab64f9dbd7c988d842ec440 100644 (file)
--- a/drivers/gpu/drm/bochs/bochs_mm.c
+++ b/drivers/gpu/drm/bochs/bochs_mm.c
@@ -16,10 +16,7 @@ int bochs_mm_init(struct bochs_device *bochs)
        vmm = drm_vram_helper_alloc_mm(bochs->dev, bochs->fb_base,
                                       bochs->fb_size,
                                       &drm_gem_vram_mm_funcs);
-       if (IS_ERR(vmm))
-               return PTR_ERR(vmm);
-
-       return 0;
+       return PTR_ERR_OR_ZERO(vmm);
 }
 
 void bochs_mm_fini(struct bochs_device *bochs)