net: e1000: Fix Unchecked return value coverity

Added check for return value of e1000_read_phy_reg().

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>

diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c
index 694114e..1f0d559 100644 (file)
--- a/drivers/net/e1000.c
+++ b/drivers/net/e1000.c
@@ -4738,12 +4738,16 @@ e1000_phy_init_script(struct e1000_hw *hw)
                        uint16_t fused, fine, coarse;
 
                        /* Move to analog registers page */
-                       e1000_read_phy_reg(hw,
-                               IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
+                       if (e1000_read_phy_reg(hw,
+                                              IGP01E1000_ANALOG_SPARE_FUSE_STATUS,
+                                              &fused))
+                               return;
 
                        if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
-                               e1000_read_phy_reg(hw,
-                                       IGP01E1000_ANALOG_FUSE_STATUS, &fused);
+                               if (e1000_read_phy_reg(hw,
+                                                      IGP01E1000_ANALOG_FUSE_STATUS,
+                                                      &fused))
+                                       return;
 
                                fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
                                coarse = fused