scsi: libfc: remove redundant initialization of 'disc'

Pointer disc is being intializated a value that is never read and then
re-assigned the same value later on, hence the initialization is
redundant and can be removed.

Cleans up clang warning:
drivers/scsi/libfc/fc_disc.c:734:18: warning: Value stored to 'disc'
during its initialization is never read
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NJohannes Thumshirn <jth@kernel.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/libfc/fc_disc.c

@@ -731,7 +731,7 @@ static void fc_disc_stop_final(struct fc_lport *lport)
  */
 void fc_disc_config(struct fc_lport *lport, void *priv)
 {
-	struct fc_disc *disc = &lport->disc;
+	struct fc_disc *disc;
 
 	if (!lport->tt.disc_start)
 		lport->tt.disc_start = fc_disc_start;