doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/drivers/net/octeontx2/lmt.h b/drivers/net/octeontx2/lmt.h
index 84a7eab..3b30992 100644
--- a/drivers/net/octeontx2/lmt.h
+++ b/drivers/net/octeontx2/lmt.h
@@ -15,7 +15,7 @@
  * @param ptr    address in memory to add incr to
  * @param incr   amount to increment memory location by (signed)
  *
- * @return Value of memory location before increment
+ * Return: Value of memory location before increment
  */
 static inline s64 atomic_fetch_and_add64_nosync(s64 *ptr, s64 incr)
 {