[PATCH] coccinelle: ifnullfree: fix ifnullfree.cocci warnings

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
TO: Denis Efremov <efremov@linux.com>
CC: Julia Lawall <Julia.Lawall@lip6.fr>
CC: Lucas Stach <l.stach@pengutronix.de>
CC: Russell King <linux+etnaviv@armlinux.org.uk>
CC: Christian Gmeiner <christian.gmeiner@gmail.com>
CC: David Airlie <airlied@linux.ie>
CC: Daniel Vetter <daniel@ffwll.ch>
CC: etnaviv(a)lists.freedesktop.org
CC: dri-devel(a)lists.freedesktop.org
CC: linux-kernel(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c:81:2-8: WARNING: NULL check before some freeing functions is not needed.

 NULL check before some freeing functions is not needed.

 Based on checkpatch warning
 "kfree(NULL) is safe this check is probably not required"
 and kfreeaddr.cocci by Julia Lawall.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Fixes: 5f80f474a2c3 ("coccinelle: ifnullfree: add vfree(), kvfree*() functions")
CC: Denis Efremov <efremov@linux.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux.git for-5.10
head:   5f80f474a2c330a8e8e30e844f1a06811f082963
commit: 5f80f474a2c330a8e8e30e844f1a06811f082963 [5/5] coccinelle: ifnullfree: add vfree(), kvfree*() functions
:::::: branch date: 13 hours ago
:::::: commit date: 13 hours ago

Please take the patch only if it's a positive warning. Thanks!

 etnaviv_gem_prime.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -77,8 +77,7 @@ static void etnaviv_gem_prime_release(st
 	/* Don't drop the pages for imported dmabuf, as they are not
 	 * ours, just free the array we allocated:
 	 */
-	if (etnaviv_obj->pages)
-		kvfree(etnaviv_obj->pages);
+	kvfree(etnaviv_obj->pages);
 
 	drm_prime_gem_destroy(&etnaviv_obj->base, etnaviv_obj->sgt);
 }