kernel documentation specification:
"The return value, if any, should be described in a dedicated section
named Return."
Signed-off-by: NArnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Link: https://lore.kernel.org/r/20211108140126.3530-1-arnaud.pouliquen@foss.st.comSigned-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>