scsi: lpfc: Fix unnecessary null check in lpfc_release_scsi_buf

lpfc_fcp_io_cmd_wqe_cmpl() is intended to mirror
lpfc_nvme_io_cmd_wqe_cmpl() for sli4 fcp completions. When the routine was
added, lpfc_fcp_io_cmd_wqe_cmpl() included a null pointer check for
phba. However, phba is definitely valid, being dereferenced by the calling
routine and used later in the routine itself.

Remove the unnecessary null check.

Link: https://lore.kernel.org/r/20210301171821.3427-9-jsmart2021@gmail.com
Fixes: 96e209be ("scsi: lpfc: Convert SCSI I/O completions to SLI-3 and SLI-4 handlers")
Co-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_scsi.c

@@ -4074,7 +4074,7 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
 
 	/* Sanity check on return of outstanding command */
 	cmd = lpfc_cmd->pCmd;
-	if (!cmd || !phba) {
+	if (!cmd) {
 		lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
 				 "9042 I/O completion: Not an active IO\n");
 		spin_unlock(&lpfc_cmd->buf_lock);