[PATCH] cxl: core: Initialize eiw and eig to fix potential uninitialized use

[Purva Yeshi <purvayeshi550@gmail.com>]

Fix Smatch-detected issue:

drivers/cxl/core/region.c:1292 check_interleave_cap()
error: uninitialized symbol 'eiw'.
drivers/cxl/core/region.c:1297 check_interleave_cap()
error: uninitialized symbol 'eig'.
drivers/cxl/core/region.c:1299 check_interleave_cap()
error: uninitialized symbol 'eig'.

Smatch reports possible uninitialized usage of these variables if
the helper functions ways_to_eiw() or granularity_to_eig() fail to
assign values under certain conditions.

Initialize the eiw and eig variables to zero when they are declared
in check_interleave_cap() to prevent potential use of uninitialized
values.

Signed-off-by: Purva Yeshi <purvayeshi550@gmail.com>
---
 drivers/cxl/core/region.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index c3f4dc244df7..edf8636f190a 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -1266,8 +1266,8 @@ static int check_interleave_cap(struct cxl_decoder *cxld, int iw, int ig)
 	struct cxl_port *port = to_cxl_port(cxld->dev.parent);
 	struct cxl_hdm *cxlhdm = dev_get_drvdata(&port->dev);
 	unsigned int interleave_mask;
-	u8 eiw;
-	u16 eig;
+	u8 eiw = 0;
+	u16 eig = 0;
 	int high_pos, low_pos;
 
 	if (!test_bit(iw, &cxlhdm->iw_cap_mask))
-- 
2.34.1