Normally the deal does not pass if the dealer (East) wins. Combined with the rule according to which the dealer receives and pays double points, this rule gives significant benefits to the player who is dealer. It is often wiser to try to win several times in a row with a low-scoring hand and receive double payments than trying to collect a single valuable hand.
Sometimes it may be useful to specify that the deal passes after East's win. E.g., in the Goulash rules this option is automatically used and cannot be changed to guarantee that a deal passes after the Goulash deal, even if the winner is East. Using this rule as a general option makes the duration of the complete game session usually significantly shorter.
Related topics:
Using five sets
Number of rounds
Round wind sequence
Dead Wall
Specifying how discards are placed on board
Using extended discard information
Charleston