Barcelona currently still leads the La Liga standings even though Real Madrid can win the postponed match. Barcelona will do their best after losing 5 points in their last two matches, so victory will be more likely in the next match instead of losing additional points.
In my opinion, Real Madrid's postponed match will not disrupt Barcelona's standings, the points difference between the two is also very thin but Barcelona is still far more superior than Real Madrid, so whatever match the two will play will not affect their match and Barcelona is also still fairly consistent in the last few matches so it is very difficult if Real Madrid intends to overtake.