accel/qaic: Validate user data before grabbing any lock

Validating user data does not need to be protected by any lock and it is
safe to move it out of critical region.

Fixes: ff13be83 ("accel/qaic: Add datapath")
Fixes: 129776ac ("accel/qaic: Add control path")
Signed-off-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517193540.14323-2-quic_jhugo@quicinc.com