wifi: wilc1000: remove redundant ret variable

Return value from cfg80211_rx_mgmt() directly instead of
taking this in another redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Jinpeng Cui <cui.jinpeng2@zte.com.cn>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220830105505.287564-1-cui.jinpeng2@zte.com.cn

drivers/net/wireless/microchip/wilc1000/cfg80211.c

@@ -997,12 +997,11 @@ bool wilc_wfi_mgmt_frame_rx(struct wilc_vif *vif, u8 *buff, u32 size)
 {
 	struct wilc *wl = vif->wilc;
 	struct wilc_priv *priv = &vif->priv;
-	int freq, ret;
+	int freq;
 
 	freq = ieee80211_channel_to_frequency(wl->op_ch, NL80211_BAND_2GHZ);
-	ret = cfg80211_rx_mgmt(&priv->wdev, freq, 0, buff, size, 0);
 
-	return ret;
+	return cfg80211_rx_mgmt(&priv->wdev, freq, 0, buff, size, 0);
 }
 
 void wilc_wfi_p2p_rx(struct wilc_vif *vif, u8 *buff, u32 size)