modules: alloc API: Use rmalloc() instead of rbmalloc()

Forward mod_alloc() calls to rmalloc() instead of rbmalloc(). rballoc()
calls are forwarded to virtual heap if it is enabled, but rmalloc()
calls are not. The commit also removes if (alignment) condition, as
rmalloc() will eventually end up to rmalloc_align() with zero alignment.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

src/audio/module_adapter/module/generic.c

@@ -188,10 +188,7 @@ void *mod_alloc_align(struct processing_module *mod, uint32_t size, uint32_t ali
 	}
 
 	/* Allocate memory for module */
-	if (alignment)
-		ptr = rballoc_align(SOF_MEM_FLAG_USER, size, alignment);
-	else
-		ptr = rballoc(SOF_MEM_FLAG_USER, size);
+	ptr = rmalloc_align(SOF_MEM_FLAG_USER, size, alignment);
 
 	if (!ptr) {
 		comp_err(mod->dev, "mod_alloc: failed to allocate memory for comp %x.",