mm/rmap: remove unneeded semicolon in page_not_mapped()

stable inclusion
from stable-5.10.47
commit ff81af8259bbfd3969f2c0dd1e36ccd0b404dc66
bugzilla: 172973 https://gitee.com/openeuler/kernel/issues/I4DAKB

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ff81af8259bbfd3969f2c0dd1e36ccd0b404dc66

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[ Upstream commit e0af87ff ]

Remove extra semicolon without any functional change intended.

Link: https://lkml.kernel.org/r/20210127093425.39640-1-linmiaohe@huawei.comSigned-off-by: NMiaohe Lin <linmiaohe@huawei.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

mm/rmap.c

@@ -1769,7 +1769,7 @@ bool try_to_unmap(struct page *page, enum ttu_flags flags)
 static int page_not_mapped(struct page *page)
 {
 	return !page_mapped(page);
-};
+}
 
 /**
  * try_to_munlock - try to munlock a page