mptfusion: remove redundant kfree checks

Fixes the following smatch warnings:

drivers/message/fusion/mptfc.c:529 mptfc_target_destroy() info:
redundant null check on starget->hostdata calling kfree()

drivers/message/fusion/mptspi.c:465 mptspi_target_destroy() info:
redundant null check on starget->hostdata calling kfree()

Signed-off-by: Joe Lawrence <[e-mail]>
Acked-by: Sreekanth Reddy <[e-mail]>
Signed-off-by: Christoph Hellwig <[e-mail]>

drivers/message/fusion/mptfc.c

···
 		if (ri)	/* better be! */
 			ri->starget = NULL;
 	}
-	if (starget->hostdata)
-		kfree(starget->hostdata);
+	kfree(starget->hostdata);
 	starget->hostdata = NULL;
 }
 

drivers/message/fusion/mptspi.c

···
 static void
 mptspi_target_destroy(struct scsi_target *starget)
 {
-	if (starget->hostdata)
-		kfree(starget->hostdata);
+	kfree(starget->hostdata);
 	starget->hostdata = NULL;
 }