[PATCH] xsk: Free variable on error path

[Alex Dewar]

In xp_create_dma_map(), memory is allocated to dma_map->dma_pages, but
then dma_map is erroneously compared to NULL, rather than the member.
Fix this.

Addresses-Coverity: ("Dead code")
Fixes: 921b68692abb ("xsk: Enable sharing of dma mappings")
Signed-off-by: Alex Dewar <alex.dewa...@gmail.com>
---
 net/xdp/xsk_buff_pool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index 795d7c81c0ca..5b00bc5707f2 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -287,7 +287,7 @@ static struct xsk_dma_map *xp_create_dma_map(struct device 
*dev, struct net_devi
                return NULL;
 
        dma_map->dma_pages = kvcalloc(nr_pages, sizeof(*dma_map->dma_pages), 
GFP_KERNEL);
-       if (!dma_map) {
+       if (!dma_map->dma_pages) {
                kfree(dma_map);
                return NULL;
        }
-- 
2.28.0