btrfs: Call kunmap if zlib_inflateInit2 fails
If zlib_inflateInit2 fails, the input page is never unmapped. Add a call to kunmap when it fails. Signed-off-by: Nick Terrell <nickrterrell@gmail.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -250,6 +250,7 @@ static int zlib_decompress_biovec(struct list_head *ws, struct page **pages_in,
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if (Z_OK != zlib_inflateInit2(&workspace->strm, wbits)) {
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pr_warn("BTRFS: inflateInit failed\n");
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kunmap(pages_in[page_in_index]);
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return -EIO;
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}
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while (workspace->strm.total_in < srclen) {
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