[ofa-general] CM Enable SRQ for less than 16 s/g - bug

[Eli Cohen]

This commit b150c30c28976f0dcf96bb28780ae62897264c54 introduces a
problem in IPOIB CM.

failure description:
test hangs.

bug was found by Mellanox regression.

test info:
server:
ttcpv -s -r -p 19033 -l 100000

client:
ttcpv -s -t 11.4.3.112 -p 19033 -l 100000 -n 8192

host info:
Name         =sw112
Serie        =PowerEdge 2850
IP           =10.4.3.112
CpuNum       =4
CpuVendor    =GenuineIntel
CpuModel     =                  Intel(R) Xeon(TM) CPU 3.20GHz
CpuMhz       =3192.303
MemSizeKb    =4049452
MachType     =x86_64
KernelRev    =2.6.16.21-0.8-smp
ChipSet      =Intel Corporation E7520 Memory Controller Hub (rev 09)
Os           =Welcome to SUSE Linux Enterprise Server 10 (x86_64) - Kernel \r (\l).
IBDevsNum    =1
HCA0Name     =mlx4_0
HCA0Desc     =sw112 HCA-1
HCA0Type     =MT25418
HCA0FWVer    =2.3.914
HCA0PSID     =MT_04A0110002
HCA0GUIDS    =NODE:0x0000000000004024;SYS:0x0000000000004027
HCA0Ports    =1:0x0000000000004025:0x8:11.4.3.112:ACTIVE;2:0x0000000000004026:0x0:12.4.3.112:DOWN
IBStackVer   =ofa_1_3_dev-20080122-0855


Can you take a look at this?