migration/rdma: Use i as for index instead of idx

Once there, all the uses are local to the for, so declare the variable
inside the for statement.

Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <20231011203527.9061-12-quintela@redhat.com>
1 file changed