staging/rdma/hfi1: Remove spurious error messages

Changed the order in which diagnostics messages are printed,
taking into account the cases where the errors are handled in
rcv_hdrerr() and no further message is needed to report.

Reviewed-by: Mark Debbage <mark.debbage@intel.com>
Reviewed-by: Arthur Kepner <arthur.kepner@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ignacio Hernandez <ignacio.hernandez@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>