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If we get signal when waiting for the mmu->lock we do not invalidate
current MMU configuration that might result in undefined behavior.

Additionally there is little or no benefit on break waiting for
ipc->lock. In current code base, we keep this lock for short periods.

Fixes: 263b2ba5

 ("accel/ivpu: Add Intel VPU MMU support")
Reviewed-by: Krystian Pradzynski <krystian.pradzynski@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230525103818.877590-2-stanislaw.gruszka@linux.intel.com