fs/qnx6: delete unnecessary checks before brelse()

brelse() tests whether its argument is NULL and then returns immediately. 
Thus remove the tests which are not needed around the shown calls.

Link: https://lkml.kernel.org/r/20220819081819.96347-1-chi.minghao@zte.com.cnSigned-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Reported-by: Zeal Robot <zealci@zte.com.cn>
Cc: CGEL ZTE <cgel.zte@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Minghao Chi <chi.minghao@zte.com.cn>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

fs/qnx6/inode.c

@@ -470,9 +470,7 @@ static int qnx6_fill_super(struct super_block *s, void *data, int silent)
 out1:
 	iput(sbi->inodes);
 out:
-	if (bh1)
 	brelse(bh1);
-	if (bh2)
 	brelse(bh2);
 outnobh:
 	kfree(qs);