mtd: mtdoops: remove unnecessary oom message

Fixes scripts/checkpatch.pl warning:
WARNING: Possible unnecessary 'out of memory' message

Remove it can help us save a bit of memory.

Signed-off-by: Zhen Lei <[e-mail]>
Signed-off-by: Miquel Raynal <[e-mail]>
Link: https://lore.kernel.org/linux-mtd/[e-mail]

drivers/mtd/mtdoops.c

···
 		cxt->mtd_index = mtd_index;
 
 	cxt->oops_buf = vmalloc(record_size);
-	if (!cxt->oops_buf) {
-		printk(KERN_ERR "mtdoops: failed to allocate buffer workspace\n");
+	if (!cxt->oops_buf)
 		return -ENOMEM;
-	}
 	memset(cxt->oops_buf, 0xff, record_size);
 	cxt->oops_buf_busy = 0;