[PATCH] ti: wlcore: fix error return code of wl1271_cmd_build_ps_poll()

When ieee80211_pspoll_get() returns NULL to skb, no error return code of
wl1271_cmd_build_ps_poll() is assigned.
To fix this bug, ret is assigned with -ENOMEM in this case.

Reported-by: TOTE Robot <redacted>
Signed-off-by: Jia-Ju Bai <redacted>
---
 drivers/net/wireless/ti/wlcore/cmd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ti/wlcore/cmd.c b/drivers/net/wireless/ti/wlcore/cmd.c
index 32a2e27cc561..7bf8b8201fdd 100644
--- a/drivers/net/wireless/ti/wlcore/cmd.c
+++ b/drivers/net/wireless/ti/wlcore/cmd.c

@@ -1120,8 +1120,10 @@ int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 	int ret = 0;
 
 	skb = ieee80211_pspoll_get(wl->hw, vif);
-	if (!skb)
+	if (!skb) {
+		ret = -ENOMEM;
 		goto out;
+	}
 
 	ret = wl1271_cmd_template_set(wl, wlvif->role_id,
 				      CMD_TEMPL_PS_POLL, skb->data,

-- 
2.17.1