bitmap: change return type of free function

No existing code is checking the return value of rte_bitmap_free
and other functions like rte_free do not return an int.
Change it to just a stub void function.

This was motivated by Coverity warnings about unchecked return
value.

Signed-off-by: Stephen Hemminger <[email protected]>
Reviewed-by: Morten Brørup <[email protected]>
Acked-by: Konstantin Ananyev <[email protected]>

Author: shemminger

doc/guides/rel_notes/release_25_11.rst

@@ -262,6 +262,9 @@ API Changes
   The link type was previously hardcoded to the Ethernet link type in the API.
   This argument is added to ``rte_pcapng_add_interface``.
 
+* bitmap: Changed the return type of ``rte_bitmap_free()`` to void
+  for consistency with other free functions.
+
 
 ABI Changes
 -----------

lib/eal/include/rte_bitmap.h

@@ -282,20 +282,15 @@ rte_bitmap_init_with_all_set(uint32_t n_bits, uint8_t *mem, uint32_t mem_size)
 /**
  * Bitmap free
  *
+ * This function does nothing in current implementation.
+ *
  * @param bmp
  *   Handle to bitmap instance
- * @return
- *   0 upon success, error code otherwise
  */
-static inline int
+static inline void
 rte_bitmap_free(struct rte_bitmap *bmp)
 {
-	/* Check input arguments */
-	if (bmp == NULL) {
-		return -1;
-	}
-
-	return 0;
+	RTE_SET_USED(bmp);
 }
 
 /**