Although it wasn't for Osama Bin Laden specifically, as a result of general dissatisfaction with Pakistan's counter terrorism efforts aid to Pakistan was withheld, and such aid was given stricter requirements before can it be provided to the Pakistani government.
This Congressional Research Service report from June, 2012 details various laws regarding aid to Pakistan prior to 2012, as well as the freezing of a minimum of 60% of aid previously allocated to the Pakistan Counterinsurgency Fund(PCF):
H.R. 1540 was introduced in the House on April 14, 2011. The House passed it on May 26...
Section 1220 of the bill stipulates that not more than 40% of FY2012 appropriated amounts for PCF may be obligated or expended until the Secretary of Defense, with the concurrence of the Secretary of State, submits an annual report to the relevant defense committees in the House and Senate, and to the House Committee on Foreign Affairs and the Senate Committee on Foreign Relations...
That report had several requirements before funds could be released(only a few notable sections are quoted here):
At a minimum, the report shall include
(iii) a discussion of the gaps in capabilities of Pakistan security units that hamper the ability of the government of Pakistan to take action against the organizations listed;
(iv) a discussion of how assistance provided using PCF will address the gaps in capabilities;
(vii) metrics used to track progress of the government of Pakistan in listing terrorist organizations, address capability gaps, and counter IEDs.
Essentially, the majority of aid to Pakistani counterinsurgency operations was frozen for 2012, until it was determined that the money was actually being used effectively and Pakistani counterinsurgency efforts could be properly examined.
A prior law, established in May 2011 and just a few weeks after Bin Laden was killed, allowed the Secretary of State to freeze funds at any time if they felt the government of Pakistan was not cooperating with counterterrorist efforts(again, some sections removed for brevity):
H.R. 2055 was introduced on May 31, 2011 as the Military Construction and Veterans Affairs funding measure...
Section 7046(c)(1)(A) (Pakistan Certification) states that none of the funds appropriated by this act may be made available to the government of Pakistan unless the Secretary of State certifies to the House and Senate appropriations committees that the government of Pakistan is
(i) cooperating with the United States in counterterrorist efforts against Haqqani Network, the Quetta Shura Taliban, Lashkar-e-Tayyiba, Jaish-e-Mohammed, Al Qaeda, and other domestic and foreign terrorist organizations, including taking steps to end support for them and preventing them from basing and operating in Pakistan and carrying out cross border attacks into neighboring countries;
(ii) not supporting terrorist activities against U.S. or coalition forces in
Afghanistan, and Pakistan military and intelligence agencies are not intervening
extra-judicially into political and judicial processes in Pakistan;
(iv) preventing the proliferation of nuclear-related material and expertise;