[PATCH] xsk: fix ptr_ret.cocci warnings

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

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

kernel/bpf/xskmap.c:24:8-14: 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: 0402acd683c6 ("xsk: remove AF_XDP socket from map when the socket is released")
CC: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
---

tree:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git master
head:   54c851a8cc739ce7f1aaea583940054cdfe2223f
commit: 0402acd683c678874df6bdbc23530ca07ea19353 [7165/7710] xsk: remove AF_XDP socket from map when the socket is released

 xskmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/bpf/xskmap.c
+++ b/kernel/bpf/xskmap.c
@@ -21,7 +21,7 @@ int xsk_map_inc(struct xsk_map *map)
 	struct bpf_map *m = &map->map;
 
 	m = bpf_map_inc(m, false);
-	return IS_ERR(m) ? PTR_ERR(m) : 0;
+	return PTR_ERR_OR_ZERO(m);
 }
 
 void xsk_map_put(struct xsk_map *map)