tree d61915e1c03204bed99a560036f6b816b720e1ce
parent da06d15cab1dd116d3279d66f70966f95afdf676
author Yong Li <yong.b.li@linux.intel.com> 1614847972 +0800
committer Yong Li <yong.b.li@linux.intel.com> 1614847972 +0800

Do not insert twice for first filter

On the first call, the filter list is empty,
the element will be insert two times, just return after the first insert.

Tested:
Check the filter callback functions, there is no duplicated call;

Signed-off-by: Yong Li <yong.b.li@linux.intel.com>
Change-Id: I4e4d5147b5c0466b651700f79afcb34940e6f48a