tests: Fix poll_cq_ex function

[ Upstream commit a4a7d80 ]

poll_cq_ex() function decrements the number of polled CQEs twice by
mistake. Fix the function to count correctly.

Fixes: 21134ab ("tests: Add timeout on polling completions")
Signed-off-by: Maxim Chicherin <maximc@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Signed-off-by: Nicolas Morey <nmorey@suse.com>

tests/utils.py

@@ -608,7 +608,6 @@ def poll_cq_ex(cqex, count=1, data=None):
                                        format(s=cqex.status))
             if data:
                 assert data == socket.ntohl(cqex.read_imm_data())
-            count -= 1
         if count > 0:
             raise PyverbsError(f'Got timeout on polling ({count} CQEs remaining)')
     finally: