[IB] cm: Add missing break in switch

Add missing "break" in switch statement. Without the break, the
CM ended up always falling through and setting every connection
request to use RC transport, which meant that UC connections
didn't work.

Signed-off-by: Roland Dreier <[e-mail]>

drivers/infiniband/core/cm_msgs.h

···
 		req_msg->offset40 = cpu_to_be32((be32_to_cpu(
 						  req_msg->offset40) &
 						   0xFFFFFFF9) | 0x2);
+		break;
 	default:
 		req_msg->offset40 = cpu_to_be32(be32_to_cpu(
 						 req_msg->offset40) &