mwifiex: Run SET_BSS_MODE when changing from P2P to STATION vif-type

We currently handle changing from the P2P to the STATION virtual
interface type slightly different than changing from P2P to ADHOC: When
changing to STATION, we don't send the SET_BSS_MODE command. We do send
that command on all other type-changes though, and it probably makes
sense to send the command since after all we just changed our BSS_MODE.
Looking at prior changes to this part of the code, it seems that this is
simply a leftover from old refactorings.

Since sending the SET_BSS_MODE command is the only difference between
mwifiex_change_vif_to_sta_adhoc() and the current code, we can now use
mwifiex_change_vif_to_sta_adhoc() for both switching to ADHOC and
STATION interface type.

This does not fix any particular bug and just "looked right", so there's
a small chance it might be a regression.
Signed-off-by: Jonas Dreßler <verdre@v0yd.nl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210914195909.36035-4-verdre@v0yd.nl

drivers/net/wireless/marvell/mwifiex/cfg80211.c

@@ -1270,29 +1270,15 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 
 	case NL80211_IFTYPE_P2P_CLIENT:
 	case NL80211_IFTYPE_P2P_GO:
-		switch (type) {
-		case NL80211_IFTYPE_STATION:
 		if (mwifiex_cfg80211_deinit_p2p(priv))
 			return -EFAULT;
-			priv->adapter->curr_iface_comb.p2p_intf--;
-			priv->adapter->curr_iface_comb.sta_intf++;
-			dev->ieee80211_ptr->iftype = type;
-			if (mwifiex_deinit_priv_params(priv))
-				return -1;
-			if (mwifiex_init_new_priv_params(priv, dev, type))
-				return -1;
-			if (mwifiex_sta_init_cmd(priv, false, false))
-				return -1;
-			break;
+
+		switch (type) {
 		case NL80211_IFTYPE_ADHOC:
-			if (mwifiex_cfg80211_deinit_p2p(priv))
-				return -EFAULT;
+		case NL80211_IFTYPE_STATION:
 			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
 							       type, params);
-			break;
 		case NL80211_IFTYPE_AP:
-			if (mwifiex_cfg80211_deinit_p2p(priv))
-				return -EFAULT;
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
 		default: