migration/rdma: Remove all "ret" variables that are used only once

Change code that is:

int ret;
...

ret = foo();
if (ret[ < 0]?) {

to:

if (foo()[ < 0]) {

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231011203527.9061-14-quintela@redhat.com>
1 file changed