[SYCL] Query USM buffer location extension only if property is passed to malloc_shared (#6268)

This aligns the implementation with malloc_host and avoids an unneeded
call in the case where the FPGA backend is used without buffer location.

This amends #6218

See also #6220

Author: pcolberg

sycl/source/detail/usm/usm_impl.cpp

@@ -183,9 +183,9 @@ void *alignedAlloc(size_t Alignment, size_t Size, const context &Ctxt,
         *PropsIter++ = PI_MEM_ALLOC_DEVICE_READ_ONLY;
       }
 
-      if (Dev.has_extension("cl_intel_mem_alloc_buffer_location") &&
-          PropList.has_property<cl::sycl::ext::intel::experimental::property::
-                                    usm::buffer_location>()) {
+      if (PropList.has_property<cl::sycl::ext::intel::experimental::property::
+                                    usm::buffer_location>() &&
+          Dev.has_extension("cl_intel_mem_alloc_buffer_location")) {
         *PropsIter++ = PI_MEM_USM_ALLOC_BUFFER_LOCATION;
         *PropsIter++ = PropList
                            .get_property<cl::sycl::ext::intel::experimental::