Fix crash in PinHandle when SMMU allocation fails and unmap queue is empty.
Previously, the code would log an error and continue looping indefinitely,
causing log spam and eventual crash.
- Free multiple handles from unmap queue (up to 100) before giving up
- Add maximum attempt counter to prevent infinite loops
- Return 0 gracefully when no more handles can be freed
- Add error handling in callers (Remap, MapBufferEx, MapBuffer) to check for
PinHandle failure and return NvResult::InsufficientMemory instead of using
invalid addresses
Signed-off-by: Zephyron <zephyron@citron-emu.org>
5eed2b221b