scsi: qlogicpti: Fix an error handling path in 'qpti_sbus_probe()'

The 'free_irq()' call is not at the right place in the error handling
path.  The changed order has been introduced in commit 3d4253d9
("[SCSI] qlogicpti: Convert to new SBUS device framework.")

Fixes: 3d4253d9 ("[SCSI] qlogicpti: Convert to new SBUS device framework.")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>