wifi: iwlwifi: mvm: Do not warn if valid link pair was not found

It is possible that though multiple links are enabled we cannot enabled
EMLSR enable more than a single link, e.g., all valid links are on the
same band etc. Thus, do not warn in case no valid link pair is found.

Fixes: b9be67fb ("wifi: iwlwifi: mvm: Add basic link selection logic")
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231219215605.142e57a05230.I7cfe78c94c3d15c4c744bccadd8f187e43594932@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c

@@ -716,7 +716,7 @@ void iwl_mvm_mld_select_links(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 		}
 	}
 
-	if (WARN_ON(!new_active_links))
+	if (!new_active_links)
 		return;
 
 	if (vif->active_links != new_active_links)