Modified the code style issue of if() {},
keep the code style consistent.

Link: https://lkml.kernel.org/r/20211207151348.54921-3-yinan@linux.alibaba.comSigned-off-by: NYinan Liu <yinan@linux.alibaba.com>
Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>