[RT Common] Fix error handling in mfxDefaultAllocatorVAAPI::AllocFramesHW

Modified AllocFramesHW to properly capture and propagate error status
from CheckAndDestroyVAbuffer during cleanup of allocated VA buffers.
This ensures error conditions during cleanup are properly reported to
callers, and avoids early exits when error is met before destroying all
allocated buffers.

Author: jinyuan-dev

_studio/shared/src/libmfx_allocator_vaapi.cpp

@@ -439,11 +439,16 @@ mfxDefaultAllocatorVAAPI::AllocFramesHW(
     else
     {
         // Some of vaCreateBuffer calls failed
+        mfxStatus cleanup_sts = MFX_ERR_NONE;
         for (VABufferID& coded_buf : allocated_surfaces)
         {
             mfxStatus sts = CheckAndDestroyVAbuffer(self->m_pVADisplay, coded_buf);
-            MFX_CHECK_STS(sts);
+            if ((MFX_ERR_NONE != sts) && (cleanup_sts == MFX_ERR_NONE))
+            {
+                cleanup_sts = sts; // Preserve the first failure encountered
+            }
         }
+        MFX_CHECK_STS(cleanup_sts);
     }
 
     return mfx_res;