4051 Don't free mdi_pathinfo_t in mptsas when device(s) are retired.

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright (c) 2014 Nexenta Systems Inc. All rights reserved.
   */
  
  /*
   * Multipath driver interface (MDI) implementation; see mdi_impldefs.h for a
   * more detailed discussion of the overall mpxio architecture.
*** 3654,3681 ****
                                          rv = ndi_devi_online(cdip, 0);
                                          MDI_CLIENT_LOCK(ct);
                                          if ((rv != NDI_SUCCESS) &&
                                              (MDI_CLIENT_STATE(ct) ==
                                              MDI_CLIENT_STATE_DEGRADED)) {
-                                                 /*
-                                                  * ndi_devi_online failed.
-                                                  * Reset client flags to
-                                                  * offline.
-                                                  */
                                                  MDI_DEBUG(1, (MDI_WARN, cdip,
                                                      "!ndi_devi_online failed "
                                                      "error %x", rv));
-                                                 MDI_CLIENT_SET_OFFLINE(ct);
                                          }
!                                         if (rv != NDI_SUCCESS) {
!                                                 /* Reset the path state */
!                                                 MDI_PI_LOCK(pip);
!                                                 MDI_PI(pip)->pi_state =
!                                                     MDI_PI_OLD_STATE(pip);
!                                                 MDI_PI_UNLOCK(pip);
                                          }
-                                 }
                                  break;
  
                          case MDI_CLIENT_STATE_FAILED:
                                  /*
                                   * This is the last path case for
--- 3655,3670 ----
                                          rv = ndi_devi_online(cdip, 0);
                                          MDI_CLIENT_LOCK(ct);
                                          if ((rv != NDI_SUCCESS) &&
                                              (MDI_CLIENT_STATE(ct) ==
                                              MDI_CLIENT_STATE_DEGRADED)) {
                                                  MDI_DEBUG(1, (MDI_WARN, cdip,
                                                      "!ndi_devi_online failed "
                                                      "error %x", rv));
                                          }
!                                         rv = NDI_SUCCESS;
                                  }
                                  break;
  
                          case MDI_CLIENT_STATE_FAILED:
                                  /*
                                   * This is the last path case for