P2P: Fix channel selection for MCC case

Commit 0d08efa447a5c5fb20bbed18a2ced36a8afe9221 modified
wpas_p2p_setup_freqs() design to use number of MCC channels capability
from the driver. However, it resulted in regression on how the preferred
vs. forced channel selection is done in the case of a MCC device.
force_freq was set unconditionally even though this was supposed to be
done only if no additional channels are available. pref_freq needs to be
used when possible to avoid preventing connection.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/p2p_supplicant.c

@@ -4162,13 +4162,14 @@ static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 		if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 			continue;
 
-		wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
-			   *force_freq);
-		*force_freq = freqs[i];
-
 		if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
-			wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency we are already using");
-			*pref_freq = *force_freq;
+			wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
+				   freqs[i]);
+			*pref_freq = freqs[i];
+		} else {
+			wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
+				   freqs[i]);
+			*force_freq = freqs[i];
 		}
 		break;
 	}