mshv: Introduce hv_result_needs_memory() helper function

mshv: Introduce hv_result_needs_memory() helper function

Replace direct comparisons of hv_result(status) against
HV_STATUS_INSUFFICIENT_MEMORY with a new hv_result_needs_memory() helper
function.

This improves code readability and provides a consistent and extendable
interface for checking out-of-memory conditions in hypercall results.

No functional changes intended.

Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Reviewed-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com>
Reviewed-by: Mukesh R <mrathor@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>