scsi: lpfc: Fix null ndlp ptr dereference in abnormal exit path for GFT_ID

In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Fix null ndlp ptr dereference in abnormal exit path for GFT_ID

An error case exit from lpfc_cmpl_ct_cmd_gft_id() results in a call to

lpfc_nlp_put() with a null pointer to a nodelist structure.

Changed lpfc_cmpl_ct_cmd_gft_id() to initialize nodelist pointer upon

entry.