malloc: remove return from void functions

[ upstream commit 732ba1be28f75c87aa2616660d34ed0a278c7ae6 ]

Remove return from rte_free and eal_free_no_trace both functions are
declared to have a return type of void so they shouldn't return a value.

Fixes: 52f409d ("trace: add memory tracepoints")

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Reviewed-by: Morten Brørup <mb@smartsharesystems.com>

lib/librte_eal/common/rte_malloc.c

@@ -46,13 +46,13 @@ mem_free(void *addr, const bool trace_ena)
 void
 rte_free(void *addr)
 {
-	return mem_free(addr, true);
+	mem_free(addr, true);
 }
 
 void
 eal_free_no_trace(void *addr)
 {
-	return mem_free(addr, false);
+	mem_free(addr, false);
 }
 
 static void *